| Method |
Precise Learning Objective |
Linked |
Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
| A |
Students describe what is happening to be particles: ie transition from a lattice to lacking a pattern (amorphous structure) |
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Melt some ice in a boiling tube over a Bunsen. |
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| T |
So what happens when a solid is heated but does not yet melt:
Matter expands when heated
Matter becomes less dense when heated. |
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What happens when a solid is heated but does not yet melt? Ball and ring demo. |
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|
| W |
Particles move faster when heated, and so occupy a larger space.
Particles do not change size, but can be of different sizes. |
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What happens to particles when they are heated? |
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| W |
When heated, the forces involved in collisions increases as the particles are moving faster. |
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What happens to the force of collision of particles when heated? |
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| T |
Particles are never stationary - other than at absolute zero
There is nothing in the gaps between particles. |
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At what temperature would particles ever be stationary? |
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| W |
DESIRABLE:
The anomaly of ice-water transition:
Less dense objects float.
If solids are more dense than liquids, why does ice float on water?
Why does a full bottle of water break when left in a freezer?
Ice is less dense than water. |
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What common chemical is an anomaly and actually less dense as a solid? |
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