Summary
Solid, liquid, gas - Bill shows that matter changes phase when you add or remove heat, and that it's all made of particles too small to see.
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Teaching resources
Discussion questions
Discussion
Solid, liquid, gas - Bill shows that matter changes phase when you add or remove heat, and that it's all made of particles too small to see..
- What makes ice turn into water and then into steam?
- Are the particles still there when water 'disappears' into the air?
- Which changes can you reverse, and which can't?
Quick work-a-long
Vocabulary: solid, liquid, gas.
Try it: Watch an ice cube melt and write down what's happening to its particles at each stage.