Textbook
Chapter 1: Introduction to Chemistry
Chapter 2: Matter and Atomic Structure
Chapter 3: Mole Concept, Chemical Formulae and Equations
Chapter 4: Periodic Table of Elements
Chapter 5: Chemical Bond
Chapter 6: Acid, Base and Salt
Chapter 7: Rate of Reaction
Chapter 8: Manufactured Substances in Industry
Chapter 3: Mole Concept, Chemical Formulae and Equations
What you need to learn in this chapter
In this chapter, we will be learning about the concepts of relative atomic mass and relative molecular mass. We will understand how these concepts are based on the carbon-12 scale and learn how to calculate them.
Next, we will dive into the mole concept, defining what a mole is and how it relates to the Avogadro constant, number of particles, and number of moles.
Moving on, we will explore chemical formulae, including the meaning of chemical formula, empirical formula, and molecular formula. Through activities, we will determine the empirical formula of magnesium oxide (MgO).
Lastly, we will learn how to write balanced chemical equations and interpret them qualitatively and quantitatively.
Topics in this chapter
1. Relative Atomic Mass and Relative Molecular Mass
What you will learn in this topic
- Conceptualising relative atomic mass and relative molecular mass based on carbon-12 scale
- Calculating relative molecular mass and relative formula mass
2. Mole Concept
What you will learn in this topic
- Defining mole
- Relating Avogadro constant, NA, number of particles and number of moles
- Stating the meaning of molar mass
- Relating molar mass, mass and number of mole
- Stating the meaning of molar volume
- Relating molar volume, volume of gas and number of mole
- Solving numerical problems involving number of particles, number of mole, mass of substances and volume of gas
3. Chemical Formula
What you will learn in this topic
- Stating the meaning of chemical formula, empirical formula and molecular formula
- Determining the empirical formula of magnesium oxide (MgO) through activities
- Determining the empirical formula of copper (II) oxide (CuO) through activities
- Solving numerical problems involving empirical formula and molecular formula
- Developing chemical formulae for compounds
4. Chemical Equation
What you will learn in this topic
- Writing balanced chemical equations
- Interpreting chemical equations qualitatively and quantitatively
- Solving stoichiometric numerical problems
Live Tuition Recordings
B3 Formula & Persamaan Kimia (3.3 & 3.4)
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27 Mar 2026
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B3 Formula & Persamaan Kimia (3.2)
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27 Feb 2026
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B3 Formula & Persamaan Kimia (3.2)
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20 Feb 2026
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B3 Formula & Persamaan Kimia (3.1-3.2)
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Friday
13 Feb 2026
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Bab 3 Formula dan Persamaan Kimia (3.4)
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Friday
18 Apr 2025
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Bab 3 Formula dan Persamaan Kimia (3.3 Part 2)
Tutor: SYUHADARATUL AINI BINTI MOHAMAT
Friday
11 Apr 2025
08:00 pm
Bab 3 Formula dan Persamaan Kimia (3.3)
Tutor: SYUHADARATUL AINI BINTI MOHAMAT
Friday
28 Mar 2025
08:00 pm
Bab 3 Formula dan Persamaan Kimia (3.1-3.2 Part 2)
Tutor: SYUHADARATUL AINI BINTI MOHAMAT
Friday
21 Mar 2025
08:00 pm
Bab 3 Formula dan Persamaan Kimia (3.1-3.2)
Tutor: SYUHADARATUL AINI BINTI MOHAMAT
Friday
14 Mar 2025
08:00 pm
Determining the empirical formula of magnesium oxide (MgO) through activities
Tutor: Sir Aiman
Wednesday
24 Apr 2024
09:00 pm
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