Explain that atoms join together to make Worksheets 3.2.1, 3.2.2 and Homework molecules. 3.2.3; Presentation 3.2 worksheet Explain how formulae represent elements Homework quiz and compounds. Worksheets 3.3.1 and 9 3 3/4 3.3 (HT only) Describe the measurements of amounts of C3.1 Quick starter substances in Homework 3.3.2; Technician’s notes Calculate the amount of moles in a given worksheet 3.3 mass. Homework quiz Calculate the mass of a given number of moles. 9 3 3/4 3.4 Key concept: Explain the law of conservation of mass. C3.1 Worksheet 3.4; Technician’s Quick starter Conservation of Explain why a multiplier appears as a notes 3.4; Presentation 3.4 Homework mass and balanced subscript in a formula. worksheet equations Explain why a multiplier appears in Homework quiz equations before a formula. Slideshow Video 9 3 3/4 3.5 Test for gases C3.1 Practical sheet 3.5; Quick starter Recall the tests for four common gases. Technician’s notes 3.5; Homework Presentations 3.5 worksheet Identify the four common gases using these Homework quiz tests. Explain why limewater can be used to detect carbon dioxide. 9 3 5/6 3.6 Mass changes when Explain any observed changes in mass in a C3.1 Worksheet 3.6; Practical Quick starter gases are in chemical reaction. sheet 3.6; Technician’s Homework reactions (HT) Identify the mass changes using a balanced notes 3.6; Presentations worksheet symbol equation. 3.6.1 and 3.6.2; Graph Homework quiz Explain these changes in terms of the Plotter 3.6 Slideshow particle model. 9 3 5/6 3.7 Using moles to Convert masses in grams to amounts in C3.1 Worksheet 3.7 Quick starter balance equations moles. Homework (HT only) Balance an equation given the masses of worksheet reactants and products. Homework quiz
Explain that atoms join together to make molecules. Explain how formulae represent elements and compounds. Worksheets 3.2.1, 3.2.2 and 3.2.3; Presentation 3.2 Homework worksheet Homework quiz 9 3 3/4 3.3 (HT only) Describe the measurements of amounts of substances in Calculate the amount of moles in a given mass. Calculate the mass of a given number of moles. C3.1 Worksheets 3.3.1 and 3.3.2; Technician’s notes 3.3 Quick starter Homework worksheet Homework quiz 9 3 3/4 3.4 Key concept: Conservation of mass and balanced equations Explain the law of conservation of mass. Explain why a multiplier appears as a subscript in a formula. Explain why a multiplier appears in equations before a formula. C3.1 Worksheet 3.4; Technician’s notes 3.4; Presentation 3.4 Quick starter Homework worksheet Homework quiz Slideshow Video 9 3 3/4 3.5 Test for gases Recall the tests for four common gases. Identify the four common gases using these tests. Explain why limewater can be used to detect carbon dioxide. C3.1 Practical sheet 3.5; Technician’s notes 3.5; Presentations 3.5 Quick starter Homework worksheet Homework quiz 9 3 5/6 3.6 Mass changes when gases are in reactions (HT) Explain any observed changes in mass in a chemical reaction. Identify the mass changes using a balanced symbol equation. Explain these changes in terms of the particle model. C3.1 Worksheet 3.6; Practical sheet 3.6; Technician’s notes 3.6; Presentations 3.6.1 and 3.6.2; Graph Plotter 3.6 Quick starter Homework worksheet Homework quiz Slideshow 9 3 5/6 3.7 Using moles to balance equations (HT only) Convert masses in grams to amounts in moles. Balance an equation given the masses of reactants and products. C3.1 Worksheet 3.7 Quick starter Homework worksheet Homework quiz