Plenary: Thinking about chemical reactions Odd One Out: calcium oxide, calcium carbonate, carbon dioxide. (Possible answers: carbon dioxide is the only gas; calcium carbonate as it is the reactant- the others are products; calcium oxide, as it does not contain carbon.) Lesson 8Eb: Oxidation Learning objectives Exemplar teaching activities Differentiation Resources skills Practical skills Developing Starter: Combustion concept map 1 n/a Resources n/a Students use a what happens to mass in a the word in the from 8Eb tea or spirit ‘combustion’ chemical reaction. middle of the board and ask students Exploring burner to State the meaning of: oxidation. to suggest related words and identify Science. investigate any Describe the reactions of metals with how they should be linked to change in mass oxygen. produce a concept map. Encourage after burning. Identify and explain the products students to suggest definitions for formed by the oxidation of metals. any related terms. Securing Explain the change in mass seen in Exploring: Losing mass reactions. Students use a tea light or spirit Compare and contrast the oxygen and burner to investigate any change in phlogiston theories for combustion. mass after burning. They should Exceeding explain any change using what they Evaluate the evidence used to displace have learnt about the combustion of the phlogiston theory of combustion. hydrocarbons. Model simple reactions using symbol equations. Explaining: Conservation of mass demonstration Demonstrate the oxidation of a metal (e.g. copper) in a closed system to show students that there is no change in mass during an oxidation reaction.
Plenary: Thinking about chemical reactions Odd One Out: calcium oxide, calcium carbonate, carbon dioxide. (Possible answers: carbon dioxide is the only gas; calcium carbonate as it is the reactant- the others are products; calcium oxide, as it does not contain carbon.) Lesson 8Eb: Oxidation Learning objectives Exemplar teaching activities Differentiation Resources skills Practical skills Developing what happens to mass in a chemical reaction. State the meaning of: oxidation. Describe the reactions of metals with oxygen. Identify and explain the products formed by the oxidation of metals. Securing Explain the change in mass seen in reactions. Compare and contrast the oxygen and phlogiston theories for combustion. Exceeding Evaluate the evidence used to displace the phlogiston theory of combustion. Model simple reactions using symbol equations. Starter: Combustion concept map 1 the word ‘combustion’ in the middle of the board and ask students to suggest related words and identify how they should be linked to produce a concept map. Encourage students to suggest definitions for any related terms. Exploring: Losing mass Students use a tea light or spirit burner to investigate any change in mass after burning. They should explain any change using what they have learnt about the combustion of hydrocarbons. Explaining: Conservation of mass demonstration Demonstrate the oxidation of a metal (e.g. copper) in a closed system to show students that there is no change in mass during an oxidation reaction. n/a Resources from 8Eb Exploring Science. n/a Students use a tea or spirit burner to investigate any change in mass after burning.
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