Demonstrate, using a double-pan balance, how one large nail can be balanced in mass by several small nails. Relate this to how we compare the masses of atoms of different elements. Plenary: Thinking about Dalton’s atomic model Consider All Possibilities: A substance contains the atoms of three different elements. (Possible answers: it is a mixture of three separate elements; a mixture of one element and one compound; a single compound.) Lesson 8Fb: Chemical properties Learning objectives Exemplar teaching activities Differentiation Resources Maths skills Practical skills Developing Starter: of reactions Exploring: Resources n/a Students use Explain how chemical reactions are Students work in pairs to list chemical Modelling from 8Fb polystyrene different from physical changes. reactions they have seen in the reactions Exploring balls and Explain the difference between laboratory or in everyday life. Each pair Students add Science. cocktail physical and chemical properties of should then choose one reaction explanatory sticks to model a substance. to illustrate using a labelled diagram or notes, using the the reaction Use observations to decide whether drawing. Display these on a wall’. five points from between carbon ‘gallery a chemical reaction has taken Dalton’s atomic and oxygen to place. Exploring: Modelling reactions theory. form carbon Model simple chemical reactions Students use polystyrene and dioxide. using word equations. cocktail sticks to model the reaction Use a simple (Dalton’s) atomic between carbon and oxygen to form model to describe a compound. carbon dioxide. Securing Model more complex chemical Explaining: Using observations of change reactions using word equations. Demonstrate what happens when Describe how atoms are rearranged mercury oxide is heated and beads of in chemical reactions. mercury metal are seen to form on the
Demonstrate, using a double-pan balance, how one large nail can be balanced in mass by several small nails. Relate this to how we compare the masses of atoms of different elements. Plenary: Thinking about Dalton’s atomic model Consider All Possibilities: A substance contains the atoms of three different elements. (Possible answers: it is a mixture of three separate elements; a mixture of one element and one compound; a single compound.) Lesson 8Fb: Chemical properties Learning objectives Exemplar teaching activities Differentiation Resources Maths skills Practical skills Developing Explain how chemical reactions are different from physical changes. Explain the difference between physical and chemical properties of a substance. Use observations to decide whether a chemical reaction has taken place. Model simple chemical reactions using word equations. Use a simple (Dalton’s) atomic model to describe a compound. Securing Model more complex chemical reactions using word equations. Describe how atoms are rearranged in chemical reactions. Starter: of reactions Students work in pairs to list chemical reactions they have seen in the laboratory or in everyday life. Each pair should then choose one reaction to illustrate using a labelled diagram or drawing. Display these on a ‘gallery wall’. Exploring: Modelling reactions Students use polystyrene and cocktail sticks to model the reaction between carbon and oxygen to form carbon dioxide. Explaining: Using observations of change Demonstrate what happens when mercury oxide is heated and beads of mercury metal are seen to form on the Exploring: Modelling reactions Students add explanatory notes, using the five points from Dalton’s atomic theory. Resources from 8Fb Exploring Science. n/a Students use polystyrene balls and cocktail sticks to model the reaction between carbon and oxygen to form carbon dioxide.
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