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Precise Learning Objective |
Linked |
Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
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Metals are good conductors of electricity because the delocalised electrons in the metal carry electrical charge through the metal. |
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Why are metals good conductors of electricity? Order different types of alloys.
Temperature sensitive smart alloys practical
Place temp sensitive alloy at different temp and time how long it takes them to go back to original shape.
Extended writing: describe melting points and boiling points of metallic substances.
Extended writing: explain why the melting point and boiling point of metallic substances are high.
Extended writing: describe the structure of metal alloys.
Research some uses of metallic substances.
Extension: make links between the uses of metal substances, their properties and structure.
Research some uses of metal alloys.
Extension: make links between the uses of metal alloys, their properties and structure.
BBC Bitesize The properties and uses of metals
BBC Bitesize Bronze – the first alloy |
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In pure metals, atoms are arranged in layers, which allows metals to be bent and shaped. |
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In pure metals atoms are arranged in layers. What property does this give them? test different materials to see if they conduct electricity or not. Students consider why they do/don't |
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Metals are good conductors of thermal energy because energy is transferred by the delocalised electrons. |
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Why are metals good conductors of thermal energy? |
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Pure metals are too soft for many uses and so are mixed with other metals to make alloys which are harder. |
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Why are pure metals often mixed with other metals or carbon? growing metal crystals.
set up at start of lesson and look at towards the end.
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Students should be able to explain why alloys are harder than pure metals in terms of distortion of the layers of atoms in the structure of a pure metal. |
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Why are alloys harder than pure metals? |
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