SS1: CHEMISTRY - 1ST TERM
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Introduction to Chemistry and Laboratory Apparatus | Week 15 Topics|1 Quiz
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Nature of Matter | Week 23 Topics|1 Quiz
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Separation Techniques I | Week 31 Topic
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Separation Techniques II | Week 45 Topics|1 Quiz
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Particulate Nature of Matter I | Week 56 Topics|1 Quiz
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Particulate Nature of Matter II | Week 69 Topics|1 Quiz
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Symbols, Formulae & Oxidation Number | Week 77 Topics|1 Quiz
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Laws of Chemical Combination | Week 84 Topics|1 Quiz
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Chemical Equation & Chemical Combination (Chemical Bonding) I | Week 94 Topics|1 Quiz
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Chemical Combination (Chemical Bonding) II | Week 104 Topics|1 Quiz
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Chemical Combination (Chemical Bonding) III & Shapes of Covalent Molecules | Week 113 Topics|1 Quiz
The Concept of Atoms, Molecules, and Ions
Topic Content:
- Atom
- Molecule
- Ion
- Atomicity of an Element
- Table: Atomicity of Some Molecular Elements

Matter is made up of atoms, molecules, and ions.
Atom:
An atom is the smallest particle of an element that can take part in a chemical reaction. It is considered the basic unit of simple substances (elements).
Atoms combine chemically to form molecules , which retain the properties of the substance.
Molecule:
A molecule is the smallest particle of a substance that can normally exist independently and still retain the chemical properties of
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