SHS1 General Science · Semester 1 Week 8: Science and Materials in Nature

Lesson notes

Learning Objectives

Indicator: 1.1.1.LI.3 - Discuss the relationship between binary compounds, the composition of binary compounds and the names of compounds.

By the end of the lesson, learners can:

Define a binary compound and state its composition (exactly two different elements chemically combined in a fixed ratio).
Write the chemical formula of common binary compounds when given their names (e.g., carbon dioxide, sodium chloride, water, hydrogen sulfide).
Name binary compounds when given their chemical formula, using the “element + ide” convention (e.g., CO₂ is carbon dioxide, NaCl is sodium chloride).
Discuss the relationship between a binary compound’s name, its formula, and the ratio of elements in its composition using examples from everyday life.
Use a chemical equation to represent the formation of a binary compound, balancing the atoms on both sides.

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Curriculum details

Strand: Exploring Materials (Strand 1)
Sub-strand: Science and Materials in Nature (1.1)
Content standard: 1.1.1.CS.2 - Know, understand, and identify the roles of solids in life. 1.1.1.LO.2 Explain the functions of solids in life.
Indicator: 1.1.1.LI.3 - Discuss the relationship between binary compounds, the composition of binary compounds and the names of compounds.
Suggested placement: Semester 1, Week 8 (Week 8 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: NaCCA curriculum document, p. 30

Exemplars (from the NaCCA curriculum)

Using Talk for Learning approaches:
- Guide learners to revise from the JHS curriculum B9.1.1.1.1 about the nature of compounds. Provide opportunities for students to practise skills related to respecting others as they use the Talk for Learning approach.
- With the aid of models, videos, charts, and the internet, learners discuss the relationship between binary compounds (such as CO₂, NO₂, etc.), their composition, and chemical equations. Provide opportunities for students to listen to their peers' opinions and express disagreements in constructive ways.
Teaching and Learning Resources:
- Internet resources such as Massive Open Online
- Courses (MOOCs) (https://www.youtube.com/watch?v=N4MdZx1fgbA;
- Equations and reaction https://www.youtube.com/watch?v=ZcF8E8aAOGs; https://www.youtube.com/watch?v=vTq4sgGd2QU)
- Books and Journals.
- Projectors
- Charts
- Pictures of Binary compounds,
- equations
- Videos on the relationship between binary compounds, chemical equations, and names of compounds
- Models
Assessment (1.1.1.AS.3). The document marks these depth-of-knowledge levels for this indicator: Level 3 Strategic reasoning.