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2023 WAEC Questions on Chemistry

Are you writing the upcoming WAEC 2023 exam and looking for the best and accurate 2023 WAEC questions on chemistry? Let’s go.

The 2023 WAEC Chemistry exam is a critical exam for students who are seeking admission into higher institutions of learning.

Preparation for this exam is essential, as it covers essential topics in chemistry, including organic chemistry, Structure Of The Atom, Standard Separation Techniques For Mixtures, Acids, Bases, and Salts.

Therefore, students need to take it seriously and prepare adequately for it.

Overview of the 2023 WAEC Chemistry Exam:

The 2023 WAEC Chemistry exam will be a written exam that will assess students’ understanding of the core concepts of chemistry. The exam is expected to have 60 Objective and 15 theory questions, and students will have three hours to complete the exam.

The exam will cover several topics, including atomic structure, periodicity, chemical bonding, states of matter, acid and base, oxidation and reduction, chemical equilibrium, and electrochemistry.

The questions will be designed to test students’ knowledge of these topics and their ability to apply that knowledge to solve problems.

There may also be questions that require students to interpret and analyze data, graphs, and other visual aids. Therefore, it’s essential to understand how to interpret data and use it to solve problems.

In conclusion, the 2023 WAEC Chemistry exam is a significant test for students who are looking to pursue higher education in Nigeria, Ghana, Sierra Leone, Liberia, and Gambia.

Students should take the exam seriously and prepare adequately to perform well. Understanding the structure and format of the exam and the types of questions likely to be included is an important step towards effective preparation for the exam.

Key Topics to Read for WAEC Chemistry 2023 Exam:

To excel in the 2023 WAEC Chemistry exam, students need to have a thorough understanding of the following key topics:

1. Stoichiometry

This topic involves the quantitative analysis of chemical reactions. It deals with the calculation of the number of reactants and products involved in a chemical reaction.

It’s essential to study stoichiometry as it provides a foundation for understanding other areas of chemistry.

2. Chemical Kinetics

This topic deals with the study of the speed and rate of chemical reactions. It is crucial because it helps to explain how and why reactions occur and how reaction rates can be manipulated.

3. Organic Chemistry

Organic chemistry is the study of carbon-based compounds, including hydrocarbons, alcohols, aldehydes, ketones, carboxylic acids, and their derivatives.

It’s an essential topic to study as it forms the basis of many chemical processes, including the manufacturing of drugs, plastics, and other consumer goods.

4. Thermodynamics

Thermodynamics deals with the study of energy and its relationship with matter. It’s important to study this topic as it provides a framework for understanding the behavior of matter at different temperatures and pressures.

5. Standard Separation Techniques For Mixtures

Standard Separation Techniques for Mixtures is an important topic in the 2023 WAEC Chemistry exam. It involves the classification of mixtures into homogeneous and heterogeneous mixtures and the standard techniques used for separating them.

6. Chemical Bonds

Chemical bonds are the attractive forces that hold atoms and molecules together in a compound. This topic is important in the 2023 WAEC Chemistry exam because it is essential to understanding the nature of chemical compounds, their physical and chemical properties, and their behavior in chemical reactions.

7. Acids, Bases And Salts

Acids, Bases, and Salts are important topics in the 2023 WAEC Chemistry exam.

Acids are substances that donate protons (H+) in a chemical reaction, while bases are substances that accept protons.

Salts are ionic compounds that are formed from the neutralization reaction between an acid and a base.

Students need to have a thorough understanding of the properties of acids and bases, including their pH, strength, and reaction with indicators such as litmus paper.

They should also understand the properties of salts, including their solubility and conductivity.

And E.T.C

Tips for Studying for the 2023 WAEC Chemistry Exam

Preparing for the 2023 WAEC Chemistry exam can be a difficult task, but with these tips, students can develop an effective study plan:

Create a study schedule

It’s essential to set aside enough time to study for the exam. A study timetable will help students to plan their time effectively and ensure they cover all the necessary topics.

Review class notes

Reviewing class notes is a great way to reinforce what has been learned in class. Students can organize their notes by topic and review them regularly.

Practice with sample questions

Practicing with sample questions is an effective way to prepare for the exam. Students can get a feel for the types of questions that will be asked and familiarize themselves with the exam format.

Memorize key formulas

Many questions in the exam will require students to use specific formulas. It’s essential to memorize these formulas so that they can be applied quickly and accurately.

Use flashcards to study terminology

Chemistry has many technical terms that can be challenging to memorize. Flashcards can be an effective way to learn and memorize terminology.

Work through practice problems

Working through practice problems is a great way to apply the concepts learned in class. It also helps to identify areas of weakness that need more attention.

In conclusion, the 2023 WAEC Chemistry exam is a critical test for students seeking admission into higher institutions of learning.

To prepare effectively, students should focus on the key topics covered in the exam and develop an effective study plan that includes practice problems, memorizing formulas and terminology, and reviewing class notes.

With these tips, students can improve their chances of performing well in the exam.

Sample 2023 WAEC Questions on Chemistry Exam:

Here are a few sample questions that students may expect to see on the 2023 WAEC Chemistry exam:

What is the difference between an acid and a base?

Answer: An acid is a compound that donates hydrogen ions, while a base is a compound that accepts hydrogen ions.

What is the ideal gas law, and how is it used?

Answer: The ideal gas law is PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the gas constant, and T is temperature. It is used to calculate the pressure, volume, temperature, or number of moles of an ideal gas.

Define chemical equilibrium.

Answer: Chemical equilibrium is a state in which the concentrations of reactants and products in a chemical reaction are stable and unchanging.

What is the difference between an exothermic and endothermic reaction?

Answer: An exothermic reaction releases heat, while an endothermic reaction absorbs heat.

State the periodic law

Answer: The periodic law states that the physical and chemical properties of elements are periodic functions of their atomic numbers.

What is meant by the term periodic property of elements?

Answer: The periodic property of elements refers to the recurring trends or patterns in the physical and chemical properties of elements as they are arranged in the periodic table.

List three properties of an element which show periodicity.


1. Atomic radius: This is the distance between the nucleus of an atom and its outermost electron.

2. Ionization energy: This is the energy required to remove an electron from an atom or ion.

3. Electronegativity: This is a measure of an atom’s ability to attract electrons towards itself in a chemical bond.

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WAEC Chemistry Questions and Answers 2023

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In conclusion, the 2023 WAEC Chemistry exam is an essential test for students pursuing a career in the field of chemistry.

It’s crucial to prepare adequately for the exam to achieve good results. The article has highlighted the key topics to study, tips for studying, and sample questions that students may encounter on the exam.

By focusing on these areas, students can increase their chances of success in the exam.

It’s essential to emphasize that success in the exam requires consistent and dedicated effort.

Students should make a study plan and stick to it, review class notes, practice with sample questions, and identify and address areas of weakness.

Finally, students should remain calm and focused during the exam, read questions carefully, and take their time to provide accurate and detailed answers.

With proper preparation and a positive mindset, students can excel in the 2023 WAEC Chemistry exam and take the first step towards a successful career in chemistry.

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