chemistry essay answer 2021

AP Chemistry Exam Questions

Free-response questions and scoring information.

Download free-response questions from this year's exam and past exams along with scoring guidelines, sample responses from exam takers, and scoring distributions.

AP Exams are regularly updated to align with best practices in college-level learning. Not all free-response questions on this page reflect the current exam, but the question types and the topics are similar, making them a valuable resource for teachers and students.

If you are using assistive technology and need help accessing these PDFs in another format, contact Services for Students with Disabilities at 212-713-8333 or by email at [email protected] . Note: versions of these PDFs with enhanced accessibility will be available in the upcoming academic year.

2024 Free-Response Questions

2024: free-response questions.

2023: Free-Response Questions

2022: Free-Response Questions

2021: Free-Response Questions

2020: Free-Response Questions

The 2020 free-response questions are available in the  AP Classroom question bank .

2019: Free-Response Questions

2018: free-response questions.

2017: Free-Response Questions

2016: Free-Response Questions

2015: Free-Response Questions

2014: Free-Response Questions

• Form 1 Mathematics Notes
• Form 2 Mathematics Notes
• Form 3 Mathematics Notes
• Form 4 Mathematics Notes
• Form 1 Mathematics Topical Questions and Answers
• Form 2 Mathematics Topical Questions and Answers
• Form 3 Mathematics Topical Questions and Answers
• Form 4 Mathematics Topical Questions and Answers
• Form 1 Functional Writing Notes
• Form 2 Functional Writing Notes
• Form 3 Functional Writing Notes
• Form 4 Functional Writing Notes
• Poetry Notes
• Grammar Notes
• Oral Literature Notes
• Oral Skills Notes
• Guide to Blossoms of the Savannah Summarized Notes - Easy Elimu
• A Doll's House
• The Pearl Study Guide
• Memories We Lost and Other Stories Study Guide
• Inheritance Study Guide
• A Silent song and Other Stories Guide
• Fathers of Nations Guide
• An Artist of the Floating World Guide
• The Samaritan Guide
• Sarufi na Matumizi ya Lugha
• Isimu Jamii Notes
• Fasihi Notes
• Ushairi Notes
• Mwongozo wa Kuandika Insha
• Tumbo Lililoshiba na Hadithi Nyingine
• Mwongozo wa Kigogo
• Mwongozo wa Chozi La Heri - Chozi la Heri Notes PDF
• Mwongozo wa Bembea ya Maisha - Bembea ya Maisha Notes PDF
• Mwongozo wa Nguu za Jadi
• Mwongozo wa Mapambazuko ya Machweo na Hadithi Nyingine
• Biology Form 1 Notes
• Biology Form 2 Notes
• Biology Form 3 Notes
• Biology Form 4 Notes
• Biology Essays
• Form 1 Biology Topical Revision Questions and Answers
• Form 2 Biology Topical Revision Questions and Answers
• Form 3 Biology Topical Revision Questions and Answers
• Form 4 Biology Topical Revision Questions and Answers
• Form 1 Chemistry Notes
• Form 2 Chemistry Notes
• Form 3 Chemistry Notes
• Form 4 Chemistry Notes
• All Chemistry Practicals Notes for KCSE and MOCKS
• Form 1 Chemistry Topical Revision Questions and Answers
• Form 2 Chemistry Topical Revision Questions and Answers
• Form 3 Chemistry Topical Revision Questions and Answers
• Form 4 Chemistry Topical Revision Questions and Answers
• IRE Form 1 Notes
• IRE Form 2 Notes
• IRE Form 3 Notes
• IRE Form 4 Notes
• Physics Form 1 Notes
• Physics Form 2 Notes
• Physics Form 3 Notes
• Physics Form 4 Notes
• CRE Form 1 Notes
• CRE Form 2 Notes
• CRE Form 3 Notes
• CRE Form 4 Notes
• Geography Form 1 Notes
• Geography Form 2 Notes
• Geography Form 3 Notes
• Geography Form 4 Notes
• History Form 1 Notes
• History Form 2 Notes
• History Form 3 Notes
• History Form 4 Notes
• Business Studies Form 1 Notes
• Business Studies Form 2 Notes
• Business Studies Form 3 Notes
• Business Studies Form 4 Notes
• Home Science Form 2 Notes
• Home Science Form 3 Notes
• Home Science Form 4 Notes
• Home Science Form 1 Notes
• Agriculture Form 1 Notes
• Agriculture Form 2 Notes
• Agriculture Form 3 Notes
• Agriculture Form 4 Notes
• Agriculture KCSE 2019 Project
• Computer Studies Form 1 Notes
• Computer Studies Form 2 Notes
• Computer Studies Form 3 Notes
• Computer Studies Form 4 Notes
• KCSE 2017 Reports
• 2018 Pre-Mocks
• 2019 Pre-Mocks
• 2022 Pre Mocks
• 2021/2022 Pre-Mock Past Papers
• 2023 Pre Mocks
• 2017 Mock Past Papers
• 2019 Mock Past Papers
• 2020 Mock Past Papers
• Mock Exam Papers 2021/2022 - Easy Elimu
• Mock Exam 2022 Questions and Answers
• Alliance Boys High School
• Maranda High School
• Form 1 Past Papers
• Form 2 Past Papers
• Form 3 Past Papers
• Form 4 Past Papers
• 2019 KCSE Prediction Papers
• 2020 KCSE Prediction Papers
• 2021 KCSE Prediction Papers
• 2022 KCSE Prediction Questions and Answers - EasyElimu
• KCSE Prediction 2023
• 2020 Post Mock Past Papers
• 2021/2022 Post Mocks
• 2023 Post Mocks
• Play Group: Activities, Homework and Syllabus
• 2023 PP1 Exams
• 2023 PP2 Exams
• Grade 1 Notes
• 2023 Grade 1 Exams
• Grade 2 Notes
• 2023 Grade 2 Exams
• Grade 3 Notes
• 2023 Grade 3 Exams
• Grade 4 Notes
• 2023 Grade 4 Exams
• Grade 5 Notes
• 2023 Grade 5 Exams
• Grade 6 Notes
• KPSEA Exams
• 2023 Grade 6 Exams
• Class 6 : Notes, Revision Papers and Syllabus
• Class 7 : Notes, Revision Papers and Syllabus
• Class 8 Notes
• 2023 Class 8 Exams
• 2023 Kcpe Prediction
• Grade 7 Notes
• 2023 Grade 7 Exams
• Pre Mock Exams 2024
• KCSE 2024 Prediction Exams  
• 2019 - 2024 Mock Exams
• KCSE 2008 - 2023 Exams with Answers
• Form 4 End Term 2 Exams 2024
• Form 3 End Term 2 Exams 2024
• Form 2 End Term 2 Exams 2024
• Form 1 End Term 2 Exams 2024
• The Samaritan Essay Questions with Answers
• Fathers of Nations Excerpts with Answers
• Kiswahili Setbooks
• Form 1 - 4 High School Notes

Chemistry Paper 1 Questions and Answers - KCSE 2021 Past Papers

« Previous Topic Kiswahili Paper 3 Questions and Answers - KCSE 2021 Past Papers

Next Topic » Chemistry Paper 2 Questions and Answers - KCSE 2021 Past Papers

• Draw a labelled diagram showing the atomic structure of  24 12 mg. (2 marks)
• The atomic number of phosphorus is 15. Draw a dot (•) and cross (x) diagram for the compound formed when phosphorus reacts with chlorine, atomic number 17. (1 mark)
• State the condition under which a Bunsen burner produces a luminous flame. (1 mark)
• Write an equation for the reaction that takes place in a luminous flame assuming the laboratory gas is butane. (1 mark)
• One of the regions in the non-luminous flame is the unburnt gas region. Describe how the presence of this region can be shown using a wooden splint. (1 mark)
• The elements sodium, magnesium and aluminium belong to group I, II and III respectively. Select the element with the highest electrical conductivity and give a reason. (1 mark)

• State two observations made during the reaction. (1 mark)
• State and explain another observation made when a drop of phenolphthalein is added to the mixture in the beaker. (1 mark)
• Explain why it is not advisable to carry out this experiment using potassium metal. (1 mark)
• Describe how a pure sample of copper(II) nitrate crystals can be prepared using recycled copper wire. (3 marks)
• Draw a setup of the experiment. (2 marks)
• Write an expression to show how the percentage of air used is calculated at the end of the experiment (1 mark)

• lithium (1 mark)
• magnesium (1 mark)
• Predict the atomic radius of calcium. (1 mark)
• Give the name of compound D. (1 mark)
• Draw two possible structures of the products formed. (2 marks)

• State the precaution that should be taken in carrying out the experiment. Give a reason. (1 mark)
• State the observations made in the boiling tube. (2 marks)
• Give the enthalpy change per mole of ammonia. (1 mark)
• Increase in temperature. (1 mark)
• Finely divided iron. (1 mark)

• Identify solid E. (1 mark)
• Name the type of reaction that takes place in chamber 1. (1 mark)
• Write an equation for the reaction that takes place in chamber 2. (1 mark)

• Compound H. (1 mark)
• Compound J. (1 mark)
• State the conditions necessary for H and J to react. (1 mark)
• Draw the structure of rhombic sulphur. (1 mark)
• Describe the observations made when rhombic sulphur is heated from room temperature until it boils. (1 mark)

• Calculate the enthalpy change when 5:12 gof potassium sulphate is completely dissolved in water (K = 39:0;5=32,0; 0 - 16.0)(1 mark)
• State Gay-Lussac's law. (1 mark)
• Write an equation for the reaction. (1 mark)
• Calculate the total volume of the gases at the end of the reaction. (3 marks)

• Describe how dilute nitrie(V) acid and blue litmus papers can be used to distinguish between solid samples of sodium carbonate and sodium sulphite. (3 marks)
• Describe how propanone can be used to extract a pure sample of sunflower oil. (2 marks)
• State why sodium hydroxide solution is not suitable for the extraction of sunflower oil. (1 mark)
• dilute acid. (1 mark)
• concentrated acid. (1 mark)

• Write a nuclear equation for the formation of nuclide K from nuclide X. (1 mark)
• The half-life of nuclide X is 47 minutes. Determine the percentage of nuclide X that remains after 188 minutes. (2 marks)
• Other than the cost of electricity, give another reason why this method is expensive. (1 mark)
• Calculate the mass of aluminium obtained when a current of 20A is used for 5 hours. (1 Faraday - 96500 C; Al - 27.0)(2 marks) 
• Articles made of copper turn green when left exposed in air over a long period of time. (1 mark)
• Addition of aqueous ammonia to a solution containing copper(II)ions produces a deep blue solution (1 mark)
• State what is meant by relative atomic mass of an element. (1 mark)
• A compound of carbon and element X with formula, CX, contains 3.6% carbon by mass. Calculate the relative atomic mass of X. (2 marks)
• Complete the following equation to show the reaction that takes place. (1 mark) H 2 0 2 0 4
• Name another reagent that can be used to prepare carbon(II) oxide by dehydration (1 mark)

• Complete the setup in Figure 6 to show how nitrogen gas can be collected. (2 marks)
• The nitrogen prepared using this setup is purer than that obtained from air. Give a reason. (1 mark)

• Give a reason why potassium iodide is added to table salt

MARKING SCHEME

• When airhole/collar is closed or fully closed 
• CH 4(g)  + 4O 2(g)  → C (s)   + 3CO (g)  + CO (g)  +5H 2 O (I)  OR CH 4(g)  + 4O 2(g)  → C (s)   + CO (g)  + CO (g)  +5H 2 O (I) 

• Aluminium It has 3 delocalised electrons while sodium and magnesium has one and two respectively

• The piece of metal darts/floats
• Melts into silvery ball
• Production of effervescence/hissing sound
• The beaker becomes warm
• Solution turns pink because sodium hydroxide/alkaline solution is formed
• Potassium reacts explosively with water/ more vigorously/ more violent
• Heat the copper wire in air to form copper
• Add excess copper (II)  oxide to dilute nitric acid
• Filter to remove unreacted copper (II)  oxide
• Heat the resulting solution to saturation
• Allow it to cool to form crystals 
• Dry/filter the crystals

• Initial height of air column - Final height of air column                  Initial height of air column OR Initial height of water - Final height of water                  Initial height of water

• Na = 2.8.1 Li = 2.1 Sodium has 3 energy levels while lithium has two or Li = 2 Na = 2.8.1
• Mg = 2.8.2 Na = 2.8.1 The effective nuclear charge is higher in magnesium than sodium. Mg has a higher number of protons
• 208± 2 Ithout showing on the graph Extrapolate to 20 on x-axis and mark to value
• Propyne  prop 1 -yne prop -1,2-iodene
• The experiment should be carried out in a fume chamber out in open since carbon (II)  oxide is poisonous
• A white percipitate is formed which dissolves to form a colourless solution
• - 92.4  ⇒ =46.2 KJmol -1    2
• It lowers the yield of ammonia since the forward reaction is exothermic or backward reaction is endothermic
• No effect A catalyst has no effect on the position of the equilibrium
• Potassium magnate VII or maganese(iv) oxide lead(vi) oxide
• Red ox/oxidation
• CI 2 (g)  + 2NaOH → NaCl (aq)  + NaOCl (aq)  + H 2 O
• 3-methylpentanol/ 3-methylpentanol
• Butanoic acid
• Concentrated sulphuric VI acid/ sulphuric acid
• Warm/heat/ temperature between 3-6ºC

• Yellow solid forms amber liquid As the temperature increases the liquid becomes darker and vicious Then it turns dark red/brown and less vicious

• RFM of K 2 SO 4 = 174 moles of K 2 SO 4 =  5.22 / 174 = 0.03 ΔH = 0.03 x 23.8 = 0.714KJ
• When gases react, they do so in volumes that bear simple ratios to one another and to the products if gaseous at constant temperature and pressure
• 2NO (g)  + O 2(g)  → 2NO 2(g) 
• 2NO + O 2  → 2NO 2  using ratio Volume of oxygen = 180 x 1                                     2 = 90cm 3 Volume of oxygen unreacted = 400 - 90 = 310 Volume of NO 2 = 18cm 3   Total volume = 310 + 180 = 490cm 3  
• Any contact between 
• Mg and hydrochloric acid
• Mg and ethanoic acid
• Using a stopwatch to show the difference
• Conclusion - HCl takes a shorter time
• Put a 6cm Mg ribbon in conical flask and add 50cm 3 HCl. Using a stopwatch, record the volume of gases collected at a time inferral e.g. 15cm 3
• Repeat the experiment using 50cm 3  of ethanoic acid
• More/higher volume of gas will be collected when HCl is used than ethanoic acid at same inferral of time OR The reaction will take a shorter time to completion when HCl is used than when ethanoic acid used
• Place blue items at the mouth of test tubes
• Both turn red
• Thereafter one of them is bleached
• The sample that produces bleaching on the litmus is sodium sulphite
• Crush the sunflower seeds using motar and pestle
• Add propane and stir
• Leave the extract on sunlight for propane to evaporate leaving oil behind
• It will react with oil to form soap
• Moles of NaOH =  0.4 x 25 = 0.01                                1000 Moles of HNO 3 = 0.01 Molarity of HNO 3 = 0.01 x 1000                                      10
• C 1 V 1 = C 2 V 2  1 x 500 = 15.9M   31.5
• Add acid to water

• 188 = 4halflives 100 - 50 - 25 - 6.25 OR x - ½x - ¼x -  1 / 8 x -  1 / 16 x % =  1 / 16  x 100 = 6.25%
• The graphite anode has to be replaced periodically
• Q = It = 20 x 5 x 60 = 360000 moles =  360000 = 1.244moles 3 x 96500 mass = 1.244 x 27 = 33.588g
• Due to formation of copper (II)  carbonate. Since copper reacts with carbon (IV)  oxide/CO 2
• Due to formation of complex ion of tetramine copper (II)  ions OR due to formation of tetramine copper  (II)  ions
• Is the mass of one atom of an element compound to the mass of carbon - 12

• H 2 C 2 O 4  → CO (g)  + CO 2(g)  + H 2 O (I) 
• Sodium methanate

• It has impurities such as noble gases
• N 2 H 4  + O 2  → N 2 + H 2 O Bonds broken 4 x 388 = 1552 1 x 163 = 163 1 x 496 = 496 = 2211 Bonds formed 1 x 944 = 944 2 x 463 = 1852 = -2796 Enthalpy of combination = -2796 + 2211 = 585KJmol - 
• Br 2(aq)  + 2I - (aq)  → 2Br - (aq)  + I 2(aq) Br 2(aq)  + 2CI -  → No reaction  Bromine will oxidize iodide ions to iodine since it has more positive E θ    Bromine will not displace chlorine since E θ  for Cl -  is more positive
• Potassium iodide is a source of iodine is needed to regulate functioning of thyroid gland

Download Chemistry Paper 1 Questions and Answers - KCSE 2021 Past Papers .

Why download.

• ✔ To read offline at any time.
• ✔ To Print at your convenience
• ✔ Share Easily with Friends / Students

Related items

• Arabic Paper 2 Questions and Answers - KCSE 2021 Past Papers
• Arabic Paper 1 Questions and Answers - KCSE 2021 Past Papers
• Aviation Technology Paper 2 Questions and Answers - KCSE 2021 Past Papers
• Aviation Technology Paper 1 Questions and Answers - KCSE 2021 Past Papers
• Woodwork Paper 1 Questions and Answers - KCSE 2021 Past Papers

access all the content at an affordable rate or Buy any individual paper or notes as a pdf via MPESA and get it sent to you via WhatsApp

What does our community say about us?

• KCSE Revision Questions
• Privacy Policy
• Mobile App Privacy Policy
• High Schools in Kenya
• Teacher Resources
• Questions and Answers
• Online Tuition and Classes in Kenya

Copyright © 2022 EasyElimu

• Skip to primary navigation
• Skip to main content
• Skip to primary sidebar

Student Sri Lanka Education

Courses, Classes, Jobs, O/L A/L Exams, Universities

A/L Chemistry Vivarana books by Ranga Gunarathna

November 9, 2021 By Hiran 1 Comment

Ranga Gunarathna has published a series of Chemistry vivarana (Analysis) books. These books contain complete examination papers (MCQ, structured essay and essay questions) and answers (marking schemes), explanations and answers to those questions.

You can order these books online from daraz .

• Questions, Answers and Analysis
• self-study books
• Includes additional MCQ papers
• Compiled by Ranga Gunarathna
• Complete Exam paper with Answers (Marking scheme), analysis of questions with clear explanations 

A/L Chemistry Past Paper vivarana books

2021 A/L vivarana – coming soon

2020 A/L vivarana

2018- 2019 A/L vivarana

2016 – 2017 vivarana

2014-2015 vivarana

2011-2012-2013 vivarana

2006-2010 vivarana

Chemistry books for A/L students

Share this:

• Click to share on Twitter (Opens in new window)
• Click to share on Facebook (Opens in new window)

No related posts.

Reader Interactions

September 26, 2023 at 8:57 pm

Please add English medium chemistry books, specially past papers vivarana

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Save my name, email, and website in this browser for the next time I comment.

Notify me of follow-up comments by email.

Notify me of new posts by email.

• Past Papers
• School Papers
• Applications
• A/L Marking Schemes
• O/L Marking Schemes
• Agriculture
• Combined Maths
• Business Studies
• Engineering Technology
• Study Materials

G.C.E Advanced Level  Examination Chemistry Sinhala medium PastPaper High-Quality Pdf Download ( Chem )

Download A/L past Examination papers for the Science stream and you can Download the GCE Advanced Level Chemistry Past paper in Sinhala medium 2021(2022) by the following links below. It’s free to download. 1 st (updated) And 2 nd  Paper

Examination   –   G.C.E. Advanced Level Exam Year               –  2021 Medium          –   Sinhala Medium 

Sample PDF 👇

29- 3 or All

Examination   –    A/L Year               –    2021

Medium          –   Sinhala Medium 

#AL #Chemistry #2021 #BioApiLK

Click here to view the pdf folder

RELATED ARTICLES MORE FROM AUTHOR

G.c.e. o/l, a/l & grade 5 scholarship exam dates announced – 2024, g.c.e. a/l exam 2023 (2024) – practical test time table & admission card, southern province chemistry 2019 grade 13 first term part i.

3 ta 2 y 5 dekm hri da kiyannako

2 witharai hari.first ionization energy eka Lithium tath wada sodium wala adui neda....

LEAVE A REPLY Cancel reply

Save my name, email, and website in this browser for the next time I comment.

2021 A/L Biology McQ Answers

Gce a/l economics past papers 2016 – 2020, gce a/l north western province 2018 second term biology model paper part i, popular posts, download timetable and study plan, download resource books, popular category.

• Past Papers 82
• Downloads 51
• Model Papers 42
• chemistry 39
• Provincial Papers / Model Papers 33
• A/L Marking Schemes 22
• Combined Mathematics 19

BioApi.Lk is a free resource site for O/L , A/L and other Students In Sri Lanka. Bio Api was founded in November 2016 as a Facebook Page. The main goal of this site is to provide Past Papers, Marking Schemes, Notes, and other Study materials that allow students to improve their knowledge. Stay with Us!

Contact us: [email protected]

© 2023 Bio Api | Designed by Sathsara

SPM TRIAL PAPERS 2021/Kimia (Chemistry)/

Further Study Guide | A Matrikulasi Student share his experience (cost, difficulty, environment, application)

🔥🔥🔥 MAGIC AI TOOLS 🔥🔥🔥

• Kimia (Chemistry)

Further Study Guide | Should you take A Level after SPM, explained by a former A Level Top Student

1. Who developed SPM Trial Paper website?

Few years ago, we were also form 5 students taking spm..

Just like you, we were also stressed and lost sleep because of it. After all, it is one of the most important exams that can potentially affect our future.

Having gone through SPM ourselves, we know how tough it is to do well in so many subjects at the same time.

Thus, we had developed this website, in hopes of assisting our Form 5 juniors to score well in SPM.

You might ask, why a website specifically for SPM Trial Papers?

Because doing tons of SPM Trial Papers had help us score 9A+ in SPM , and received full JPA scholarships for our further studies .

In the next section, we will further explain how SPM Trial Papers can help you score well in SPM. So please keep reading.

2. Why do SPM Trial Questions?

Spm tips are very accurate, they said..

A lot of people out there are selling "SPM TIPS" at a very high price. They claim that their predictions on SPM questions are "PASTI KENA" and "100% SKOR"

But let me tell you the truth after spending hundreds on SPM TIPS.

Having spent lots of cash myself to buy those "SPM TIPS" , I can tell you the truth about it.

Have you ever wondered how those people predict what will come out in SPM? Do you think they have some "insider information" ?

Leaking question is a criminal offence , so it is highly unlikely they would do that.

Then how on earth did they predict the questions with such accuracy?

They actually analyse SPM Trial Question of all states, as well as past year questions. From there, they try to come out with an educated guess on what is going to come out in exam.

If you had look into the thick book of "SPM TIPS", there will be some sample questions that it said is going to appear in the real exam.

But don't be surprised, those questions are nothing but some SPM Trial Questions. They actually do this for good reason.

SPM Trial Papers are similar to real SPM questions.

SPM Trial Papers are set by experienced teachers from various states of Malaysia.

Some teachers who set SPM Trial Paper Questions are also involved in setting the real SPM questions. This means that the questions in SPM Trial Papers may be similar to those in the actual SPM exam.

Finish all Trial and Past Questions, and you will score.

Lastly, I want to emphasize that I cannot guarantee the accuracy of those SPM Tips . Personally, I am not against it, because it at least gives some idea what to study at the last minute.

However, bear in mind that SPM Trial Questions and Past Year Questions are the bases of their predictions. So, finishing all Trial questions and Past Year Questions will likely prepare you well for the exam.

Good Luck for your SPM exam!!

3. Who should I contact for any enquiries regarding the SPM Trial Paper Website?

If you are stuck on a question, feel free to ask us on FB Messenger . 🙂

We will be more than willing to guide you on your questions. 😊

Should you discover any issues in this website, or intend to request for papers not on the website, please do not hesitate to contact us.

Any feedback is highly appreciated on this website. It can help us improve it and serve you better. You can provide us with feedback anonymously with google form .

• FB Messenger: https://m.me/spmpaper.me
• Email: [email protected]
• Google Form: https://forms.gle/Cq8GzRRdYNp9W3oz9

4. Where to get the latest SPM Trial Paper and Soalan Percubaan resources?

This website is continuously updated with the latest SPM Trial Papers and Soalan Percubaan SPM from 2011-2021. Also, we share the latest SPM tips regularly on Facebook. Please like our Facebook Page to stay updated.

Here are a list of our social media handles:

• Facebook: https://www.facebook.com/spmpaper.me
• Instagram: @spmpaper
• Twitter: https://twitter.com/spmpaper
• Blog: https://spmpaper.me
• YouTube: https://www.youtube.com/channel/UCo5-hz-aF77DvSXD5_mYiIA
• Medium: https://medium.com/spmpaper

5. List of states of SPM Trial Papers and Soalan Percubaan SPM

We have collected SPM Trial Papers and Soalan Percubaan from year 2011 to 2021 from following states of Malaysia .

• Negeri Sembilan
• Kuala Lumpur

6. List of subjects of SPM Trial Papers and Soalan Percubaan SPM

Following subjects of SPM Trial Papers are available on this website.

• English language / Bahasa Inggeris
• Malay language / Bahasa Malaysia
• History / Sejarah
• Physics / Fizik
• Chemistry / Kimia
• Math / Matematik
• AddMath / Matematik Tambahan
• Economics / Ekonomi Asas
• Biology / Biologi
• Commerce / Perdagangan
• Science / Sains
• Geography / Geografi

• Username Password Remember me Sign in New here ? Join Us

Chemistry 2021 WAEC Past Questions

The hydrolysis of proteins by diluting mineral acids produces 

• C. amino acids
• D. fatty acids

Which of the following oxide causes acid rain?

• C. H\(_{2}\)O\(_{2}\)
• D. NO\(_{2}\)

The ratio of carbon atoms of hydrogen atoms in a hydrocarbon is 1:2. If its molecular mass is 56, what is its molecular formula?

• A. C\(_{3}\)H\(_{6}\)
• B. C\(_{4}\)H\(_{8}\)
• C. C\(_{2}\)H\(_{4}\)
• D. CH\(_{2}\)

What is the relative molecular mass of the compound below?

[H = 1.0; C = 12.0; O = 16.0]

Cathodic protection of metals is based on

• A. standard electrode potential of hydrogen
• B. its electrical conductivity
• C. nature of oxides formed
• D. relative tendencies of oxidation
• Mathematics
• English Language
• Animal Husbandry
• Literature in English
• Accounts - Principles of Accounts
• Christian Religious Knowledge (CRK)
• Agricultural Science
• Islamic Religious Knowledge (IRK)
• Civic Education
• Further Mathematics
• Home Economics
• Book Keeping
• Data Processing
• Catering Craft Practice
• Computer Studies
• Physical Education
• Office Practice
• Technical Drawing
• Food and Nutrition
• Home Management

G.C.E. Advanced Level (A/L) Chemistry Past Papers and Answers

Advanced Level Chemistry MCQ 1984

Advanced level chemistry mcq 1985, advanced level chemistry mcq 1986, advanced level chemistry mcq 1987, advanced level chemistry mcq 1988, advanced level chemistry mcq 1989, advanced level chemistry ii 1989, advanced level chemistry mcq 1990, advanced level chemistry ii 1990, advanced level chemistry mcq 1991, advanced level chemistry ii 1991, advanced level chemistry mcq 1992, advanced level chemistry ii 1992, advanced level chemistry mcq 1993, advanced level chemistry ii 1993, advanced level chemistry mcq 1994, advanced level chemistry ii 1994, advanced level chemistry mcq 1995, advanced level chemistry ii 1995, advanced level chemistry mcq 199 6, advanced level chemistry ii 1996, advanced level chemistry mcq 1997, advanced level chemistry ii 1997, advanced level chemistry mcq 1998, advanced level chemistry ii 1998, advanced level chemistry mcq 1999, advanced level chemistry ii 1999, advanced level chemistry mcq 2000, advanced level chemistry ii 2000, advanced level chemistry mcq 2012, advanced level chemistry ii 2012, a dvanced level chemistry 2012 marking scheme, advanced level chemistry mcq 2013, advanced level chemistry ii 2013, a dvanced level chemistry 2013 marking scheme, advanced level chemistry mcq 2014, advanced level chemistry ii 2014, a dvanced level chemistry 2014 marking scheme, advanced level chemistry mcq 2015, advanced level chemistry ii 2015, a dvanced level chemistry 2015 marking scheme, advanced level chemistry mcq 2016, advanced level chemistry ii 2016, a dvanced level chemistry 2016 marking scheme, advanced level chemistry mcq 2017, advanced level chemistry ii 2017, a dvanced level chemistry 2017 marking scheme, advanced level chemistry mcq 2018, advanced level chemistry ii 2018, a dvanced level chemistry 2018 marking scheme, advanced level chemistry i 2019 | new & old syllabus, advanced level chemistry ii 2019 | new & old syllabus, advanced level chemistry 2019 marking scheme | new & old syllabus, advanced level chemistry i 2020 | new & old syllabus, advanced level physics ii 2020 | new & old syllabus, advanced level chemistry 2020 marking scheme | new & old syllabus, advanced level chemistry i 2021, advanced level chemistry ii 2021, advanced level chemistry 2021 marking scheme, related posts.

• Aptitude Tests (33)
• Architecture (10)
• Articles (1)
• B.Design (6)
• Biology Marking (14)
• Biology Marking (English Medium) (5)
• Biology Notes (5)
• Biology Papers (45)
• Biology Papers (English Medium) (5)
• Chemistry Marking (19)
• Chemistry Marking (English Medium) (7)
• Chemistry Notes (16)
• Chemistry Papers (54)
• Chemistry Papers (English Medium) (5)
• Colombo Uni (5)
• Combined Maths Marking (14)
• Combined Maths Marking (English Medium) (3)
• Combined Maths Notes (5)
• Combined Maths Papers (97)
• Combined Maths Papers (English Medium) (21)
• Fashion Design (13)
• General English (5)
• German Tech (2)
• GIT Notes (10)
• GIT Papers (8)
• Higher Mathematics (7)
• ICT Marking (11)
• ICT Marking (English Medium) (3)
• ICT Notes (37)
• ICT Papers (11)
• ICT Papers (English Medium) (9)
• Irrigation Technology (1)
• Japura Uni (1)
• Kelaniya Uni (9)
• Model Papers (67)
• Moratuwa Uni (7)
• NDES / TTI (17)
• Nursing (3)
• Ocean Uni (1)
• Open Uni (2)
• Palath Papers (96)
• Physical Science (2)
• Physics Marking (18)
• Physics Marking (English Medium) (6)
• Physics Notes (5)
• Physics Papers (49)
• Physics Papers (English Medium) (5)
• Rajarata Uni (4)
• Resource Books (4)
• Resource Books (English medium) (4)
• Sabaragamuwa Uni (1)
• Scholarships (1)
• School Papers (138)
• UNIVOTEC (5)
• Uva Uni (15)
• Vidyapeeta (1)

• Combined Maths
• Agricultural Science
• Business Studies
• Business Statistics
• Christianity
• Buddhist Civilization
• Drama and Theatre
• Political Science
• General English
• Agriculture
• Home Economics
• Indian History
• Sri Lankan History
• Grade 11 Papers
• Grade 10 Papers
• Grade 09 Papers
• Grade 08 Papers
• Grade 07 Papers
• Grade 06 Papers
• Scholarship Exam Past Papers
• Scholarship Model Papers
• Environment
• Mathematics
• Sinhala Language
• Tamil Language
• Catholicism
• Grade 11 English Medium
• Grade 10 English Medium
• Grade 09 English Medium
• Grade 08 English Medium
• Grade 07 English Medium
• Grade 06 English Medium
• Sinhala Medium
• Sinhala Medium Papers
• Sinhala Medium Marking Schemes
• English Medium Papers
• Tamil Medium Papers
• Sinhala Medium Answers
• English Medium
• English Medium Answers
• Tamil Medium
• Sinhala Medim Papers
• Sinhala Medium Marking
• English Medium Marking
• Tamil Medium Marking
• Western Province
• North Western Province
• Southern Province
• North Central Province
• Central Province
• Sabaragamuwa Province
• Royal College
• Ananda College
• D.S.Senanayake
• Devi Balika
• Nalanda College
• Rathnavali Balika
• Visakha College
• Grade 11 Textbooks
• Grade 10 Textbooks
• Grade 9 Textbooks
• Grade 8 Textbooks
• Grade 7 Textbooks
• Grade 6 Textbooks
• WIKI Forum! Join

2022 A/L Chemistry Past Paper | Sinhala Medium

Gce advanced level 2022 chemistry sinhala medium paper quick download.

Get the 2022 A/L Chemistry paper in Sinhala Medium by downloading it as a PDF file. The Sinhala medium 2022 A/L Chemistry past exam paper is available for download. The exam took place on February 01st , 2023.

GCE Advanced Level Chemistry Past Paper 2022 in Sinhala Medium

Download 2022 A/L Chemistry Past Paper Sinhala Medium as a PDF file. 2022(2023) AL Chemistry paper prepared and published by Department of Examinations , Sri Lanka. Download 2022 A/L paper using following link Below. It’s free to download. We have a large collection of past papers for the A/L Chemistry exam .

Examination   –  GCE A/L Subject           –  Chemistry Medium         –  Sinhala Medium Year                – 2022(2023)

Download 2022 A/L Chemistry paper :

Download Preview

Download the Previous A/L Chemistry exam papers :

• 2021 Exam Paper 2021 Paper Marking
• 2020 Exam Paper 2020 Paper Marking
• 2019 Exam Paper 2019 Paper Marking
• 2018 Exam Paper 2018 Paper Marking
• 2017 Exam Paper 2017 Paper Marking
• 2016 Exam Paper 2016 Paper Marking
• 2015 Exam Paper 2015 Paper Marking
• 2014 Exam Paper 2014 Paper Marking
• 2013 Exam Paper 2013 Paper Marking
• 2012 Exam Paper 2012 Paper Marking
• 2011 Exam Paper
• 2010 Exam Paper 2010 Paper Marking
• 2009 Exam Paper
• 2008 Exam Paper
• 2007 Exam Paper
• 2006 Exam Paper
• 2005 Exam Paper
• 2004 Exam Paper
• 2003 Exam Paper
• 2002 Exam Paper
• 2001 Exam Paper
• 2000 Exam Paper
• 1999 Exam Paper
• 1998 Exam Paper
• 1997 Exam Paper
• 1996 Exam Paper
• 1995 Exam Paper
• 1994 Exam Paper
• 1993 Exam Paper
• 1992 Exam Paper
• 1991 Exam Paper
• 1990 Exam Paper

Download 2022 A/L Past Papers from Past Papers Wiki , the leading source for high-quality and up-to-date past exam papers for all GCE A/L subjects. Access all subject papers including Physics, Biology , Chemistry and more. Prepare effectively for your A/L exams and improve your performance with our user-friendly and reliable platform in Sri Lanka. You’ll be able to identify your strengths and weaknesses, familiarize yourself with the A/L exam format, and increase your confidence for success on exam day.

Download more past papers from the Department of Examinations website.

Last Update: 2024/01/03

Grade 12 ICT Syllabus in Sinhala medium PDF Download

2022 a/l chemistry past paper | tamil medium.

sandali pehesara

Sandali is a dedicated educational content creator who has made it her mission to help students in Sri Lanka excel in their term tests and national exams. As a volunteer, she uses her expertise in various subjects to develop engaging and informative content that is tailored to meet the specific needs of students studying for O/L and A/L exams.

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Buy Books Online

Pastpapers wiki is a free resource site for O/L and A/L Students In Sri Lanka. Past Papers WiKi was founded in October 2019 by Education Resources.lk. The main goal of this site is to provide Past Papers, Marking Schemes, Notes, and other resources that allow students to improve their knowledge.

https://forum.pastpapers.wiki/ Email:  [email protected]

Become a Volunteer – Help Others 🙋‍♂️

We are currently looking for volunteers who are willing to share their expertise and contribute to our community by sharing educational materials in our forum. We’re looking for individuals who can help us create and share educational materials such as articles, videos, and social media posts that will inspire and educate others.

Share Past Papers 📝 | Help Others 🤝 Join With: https://forum.pastpapers.wiki/

Disclaimer of Past Papers WiKi

This website is continued for your personal appreciation or educational purposes only . All Content of this website is published by extracting the information from online sources such as official government websites, social media, other websites, etc. The copyrights of these contents belong to the responsible owners . If a modification will happen in this information, our website does not assume any responsibility. If you have any questions or suggestions, please contact us.

 – Mobile No:  071-8540371 –  Email:  [email protected]  

• Science stream
• Commerce stream
• Technology stream
• Arts Stream
• Common Subjects
• WIKI Forum!

Copyright 2019 -2021 © All rights reserved.