Lesson Notes By Weeks and Term v4 - SHS 1

Lesson Video

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Performance objectives

• Define binary compounds and their significance.
• Identify common binary compounds and their formulas.
• Describe the relationship between composition and names.
• Write and balance simple chemical equations.
• Discuss practical applications of binary compounds.

Lesson summary

This lesson connects the broad topic of "Essentials for Survival" to the fundamental principles of chemistry. We will explore how the very substances that keep us alive, such as water and the gases we breathe, are made of chemical compounds. Specifically, we will focus on a simple but important type of compound called a binary compound. By understanding how these compounds are formed, named, and written, we gain a deeper appreciation for the building blocks of life and our environment. In Ghana, understanding compounds helps us discuss issues like water quality from the Densu River, air quality in Accra, or the safety of using charcoal stoves in our homes.

Lesson notes

Part 1: Revision of Key Terms (JHS Link)

Before we begin, let's remember some ideas from JHS. Element: A pure substance that cannot be broken down into anything simpler. It consists of only one type of atom. Examples: Oxygen (O), Carbon (C), Sodium (Na). Compound: A pure substance formed when two or more different elements are chemically joined together in a fixed ratio. The properties of a compound are different from the properties of its constituent elements. Example: Water (H₂O) is a liquid, but it is made from Hydrogen (H) and Oxygen (O), which are both gases. Mixture: Two or more substances mixed together but not chemically joined. They can be separated by physical means. Example: A mixture of gari and sugar. You can still see the individual particles.

Today, we are focusing on one specific type of compound. Part 2: What is a Binary Compound?

The word "bi" means two. Think of a bicycle (two wheels). A binary compound is a chemical compound that is made of exactly two different elements.

Evaluation guide

• Discuss the relationship between binary compounds, the composition of binary
• compounds and the names of compounds .
• Using Talk for Learning approaches:
•  Guide learners to revise from the JHS curriculum B9.1.1.1.1 about the nature of