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B1.4 THE PARTICLES ARE ALWAYS MOVING IN SOME WAY
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The particles are always moving in some way – they have an energy of movement. This could be shaking on the spot or moving from place to place. Watch the animation to see how particles in the solid state move.
Heating gives the particles more energy of movement – they are more energetic.
With more energy the particles move more quickly and violently.

Watch both animations together to see this difference.

 

Notes: see Teachers’ Guide
 
teachers’ guide b2



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b1: particle theory
b2: melting
b3: melting points
b4: using ideas

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