Materials · JHS3 Science

Lesson notes

Learning Objectives

Indicator: B9.1.1.1.1 - Identify by name binary chemical compounds and discuss their uses.

By the end of the lesson, learners can:

Define a binary chemical compound as a substance made of exactly two different elements chemically combined in fixed proportions.
Identify and name at least five binary chemical compounds from a collection of everyday materials found at home, school and the community.
Write the chemical symbols and correct formula for at least four binary compounds such as water (H₂O), table salt (NaCl), and marble (CaCO₃, noting it contains three elements and is therefore not binary).
Discuss at least three practical uses of common binary compounds in daily Ghanaian life, such as cooking, cleaning and construction.
Sort given materials into binary compounds and non-binary compounds, giving a reason for each choice.

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Curriculum details

Strand: Diversity of Matter (Strand 1)
Sub-strand: Materials (1.1)
Content standard: B9.1.1.1 - Show an understanding of formation of binary chemical compounds and their uses (Acids, Bases and Salts)
Indicator: B9.1.1.1.1 - Identify by name binary chemical compounds and discuss their uses.
Suggested placement: Term 1, Week 1 (Week 1 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: Science, Common Core Programme (JHS1-JHS3), 2023, p. 87
Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

1. Identify and name chemical compounds from a collection of materials commonly found at home, school and the community such as table salt, water, vinegar, fuel (take precaution), soap, detergents, marble and fertilisers.
2. Write the chemical symbols of the elements identified in the chemical compounds.