| Method |
Precise Learning Objective |
Linked |
Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
| T |
Particles in a solid are arranged in a lattice (pattern). |
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How are particles in a solid arranged? |
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| T |
Different types of solid are have their particles arranged in a differnet shaped lattices (patterns). |
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Do all solids have the particles arranged in the same pattern? |
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| T |
Metals are malleable and ductile because their particles are arranged in layers with weakish bonds between them.
(This is an oversimplification as dislocations and grain boundaries are the true weaknesses) |
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Why are metals malleable and ductile? Show magnetic balls in layers as http://www.the-buckyballs.com/upload/201303/1363691684369348556.jpg
Yet to be bought!!!!!
Less printing means more toys. |
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| W |
When a force is applied to the metal layers they slide over each other changing the material's shape. |
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What happens to the metals layers when a force is applied? |
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| W |
Metals are tough because when there is a shock of energy, it can be absorbed in the flexibility of these weak bonds. |
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Why are metals known as tough? |
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| T |
Ceramics are brittle because when there is a shock of energy, it can not be absorbed as there is no flexibility in the strong bonds. |
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Why are ceramics brittle? |
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| T |
Ceramics are hard and brittle because their particles are held in a lattice shape such as a tetrahedral. |
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Why are ceramics hard and brittle? Show Molymod model of diamond. |
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| W |
Tetrahedrals are strong shapes as each particle is held in place by triangles of bonds. |
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Why are tetrahedrals strong shapes? |
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| W |
The strong structure means that particles will not move as much as others so can scratch the softer material. But it also means that a shock of energy can not be absorbed by the bonds as there is no flexibility in the structure. |
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What does a strong structure mean? |
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| W |
The particles in polymers are a arranged in chains. |
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How are particels in a polymer arranged? |
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| W |
The bonds in the chain are very strong, but the force between chains are relatively weak. |
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What are the bonds in a polymer like? |
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| W |
The length of the particle chain affects how the chains interact with each other and so the properties of the polymer. |
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What does the length of a polymer chain affect? Pour long tangled string and short lengths |
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Application of ceramics, polymers and composites (qualitative) |
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What are the applications of ceramics, polymers and composites? Why don't we use chocolate tea pots?
Think of a situation and workout the material requirements are. Then match them to a type of material. |
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