Compare the physical and chemical Explaining: Different structures properties of metal and non-metal Show students the structure of oxides. different oxides representing Recall there is usually a regular molecular and lattice structures using gradation in chemical properties as you molecular models, e.g., sulfur dioxide go down a group. molecules and a magnesium oxide Use data to identify trends in chemical lattice. Discuss the differences properties within a group. between the structures and link these Identify a pattern of reactivity in the differences with the melting points of reaction between some alkali metals the oxides. and water and use this to predict the reactivity of other alkali metals. Plenary: Thinking about trends in Exceeding chemical properties State that atoms can be joined up to Consider All Possibilities: When a make molecules or giant lattice mixture of an element and oxygen is structures. heated and is added the pH Describe the difference between remains 7. (Possible answers: molecules and giant lattice structures. the element does not react with oxygen; the element is hydrogen and the product formed is water; the element forms an oxide that is insoluble in water.) Lesson 8Gb: Corrosion Learning objectives Exemplar teaching activities Differentiation Resources Maths skills Practical skills Developing Starter: Describing substances Explaining: Resources n/a Students set up Describe the corrosion of metals by Arrange a number of different objects Symbol equations from 8Gb an experiment reactions with oxygen. made of different materials, in for combustion Exploring to investigate Identify and explain the products around the room. Working Equations for the Science. the conditions ‘stations’, formed by the oxidation of metals. in pairs, ask students to list reactions of zinc required for iron State the meaning of: rusting. adjectives that describe the and copper will to rust. Recall ways in which iron can be appearance or properties of each follow a similar prevented from rusting. of the objects. format, while Recall some reactions that happen those for sodium slowly and some that happen quickly. Exploring: Investigating rusting oxide (Na2O) and iron oxide
Compare the physical and chemical properties of metal and non-metal oxides. Recall there is usually a regular gradation in chemical properties as you go down a group. Use data to identify trends in chemical properties within a group. Identify a pattern of reactivity in the reaction between some alkali metals and water and use this to predict the reactivity of other alkali metals. Exceeding State that atoms can be joined up to make molecules or giant lattice structures. Describe the difference between molecules and giant lattice structures. Explaining: Different structures Show students the structure of different oxides representing molecular and lattice structures using molecular models, e.g., sulfur dioxide molecules and a magnesium oxide lattice. Discuss the differences between the structures and link these differences with the melting points of the oxides. Plenary: Thinking about trends in chemical properties Consider All Possibilities: When a mixture of an element and oxygen is heated and is added the pH remains 7. (Possible answers: the element does not react with oxygen; the element is hydrogen and the product formed is water; the element forms an oxide that is insoluble in water.) Lesson 8Gb: Corrosion Learning objectives Exemplar teaching activities Differentiation Resources Maths skills Practical skills Developing Describe the corrosion of metals by reactions with oxygen. Identify and explain the products formed by the oxidation of metals. State the meaning of: rusting. Recall ways in which iron can be prevented from rusting. Recall some reactions that happen slowly and some that happen quickly. Starter: Describing substances Arrange a number of different objects made of different materials, in ‘stations’, around the room. Working in pairs, ask students to list adjectives that describe the appearance or properties of each of the objects. Exploring: Investigating rusting Explaining: Symbol equations for combustion Equations for the reactions of zinc and copper will follow a similar format, while those for sodium oxide (Na2O) and iron oxide Resources from 8Gb Exploring Science. n/a Students set up an experiment to investigate the conditions required for iron to rust.
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