Preparing for the West African Senior School Certificate Examination (WASSCE) can be a challenge, especially for science students. One of the most critical subjects is Chemistry. To perform excellently, students must revise using WASSCE Chemistry Past Questions and Answers.
This comprehensive article provides access to sample questions, detailed answers, and smart strategies for using past questions to score high in Chemistry. Whether you are a first-time candidate or retaking the exam, using WASSCE Chemistry Past Questions and Answers is the surest way to succeed.
What is WASSCE Chemistry About?
Chemistry in WASSCE covers a wide range of theoretical and practical topics. It tests candidates’ understanding of chemical principles, reactions, equations, calculations, lab techniques, and applications of chemistry in everyday life.
The exam is divided into:
- Paper 1: Objective (Multiple Choice)
- Paper 2: Theory (Essay)
- Paper 3: Practical (Experimental Procedures)
Using WASSCE Chemistry Past Questions and Answers for each paper is essential for understanding how WAEC sets its questions and what is expected from candidates.
Why You Should Use WASSCE Chemistry Past Questions and Answers
Here’s why every candidate must use WASSCE Chemistry Past Questions and Answers while preparing:
Familiarization with Exam Format
You’ll understand how questions are structured: multiple-choice patterns, theory questions, and practical instructions.
Improved Time Management
Practicing with timed past questions helps you manage the actual exam time effectively.
Exposure to Commonly Repeated Questions
WAEC often repeats question formats and similar problems across years.
Builds Confidence
The more questions you solve correctly, the more confident you become in tackling new ones.
WASSCE Chemistry Past Questions (Sample Objective Questions)
Below are examples of multiple-choice questions commonly seen in WASSCE Chemistry exams:
1. Which of the following substances is a mixture?
A. Water
B. Hydrogen
C. Air
D. Iron
Correct Answer: C. Air
2. What is the mass of 0.2 mole of sodium hydroxide (NaOH)?
[Na = 23, O = 16, H = 1]
A. 4 g
B. 20 g
C. 8 g
D. 40 g
Correct Answer: B. 8 g
3. The pH of a neutral solution is:
A. 3
B. 7
C. 5
D. 9
Correct Answer: B. 7
Sample WASSCE Chemistry Theory Questions and Answers
Question 1: Define the term “mole” as used in Chemistry.
Answer:
A mole is the amount of substance that contains the same number of particles (atoms, molecules, ions, or electrons) as there are in 12 grams of carbon-12. This number is approximately 6.022 x 10²³ particles (Avogadro’s number).
Question 2: Calculate the number of moles in 44g of CO₂.
(C = 12, O = 16)
Answer:
Molar mass of CO₂ = 12 + (16 × 2) = 44g/mol
Number of moles = Mass / Molar Mass = 44 / 44 = 1 mole
Question 3: List two differences between an endothermic and exothermic reaction.
Answer:
| Feature | Endothermic Reaction | Exothermic Reaction |
|---|---|---|
| Heat Flow | Absorbs heat | Releases heat |
| Temperature | Decreases | Increases |
WASSCE Chemistry Practical Past Questions
Sample Practical Question:
You are provided with three unknown solutions labeled A, B, and C. Carry out the following tests:
- To solution A, add few drops of NaOH solution.
- To solution B, add dilute HCl and observe.
- Test solution C with litmus paper.
Expected Results:
- Solution A gives white precipitate: may be Zn²⁺ or Pb²⁺.
- Solution B gives effervescence: presence of carbonate (CO₃²⁻).
- Solution C turns red litmus blue: indicates an alkali.
Understanding these types of questions through WASSCE Chemistry Past Questions and Answers helps candidates handle lab-based tasks easily.
Download Free WASSCE Chemistry Past Questions and Answers PDF
For convenience, many websites and educational platforms provide free downloadable PDFs of WASSCE Chemistry Past Questions and Answers. These resources often include:
- Multiple Years (2010–2024)
- Objective and Theory Sections
- Solved Practical Past Questions
- Marking Schemes and Grading Guides
Download below are the compiled WASSCE chemistry past questions we have done just for you.
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Conclusion: Your Roadmap to Chemistry Success
Success in Chemistry begins with preparation. The use of WASSCE Chemistry Past Questions and Answers gives students an advantage by reinforcing their knowledge, exposing them to real exam formats, and boosting their confidence.
Whether you’re aiming for an A1 or just trying to pass, don’t underestimate the power of past questions. Practice consistently, stay focused, and don’t forget to check answers and explanations after every study session.
