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Many of the different materials you use day in, day out, can be changed by a change in the temperature. What will happen to them?
Sometimes they melt, sometimes they boil, sometimes they turn solid, sometimes they catch fire.
You already know, from your experiences in life and from your science lessons, that some solids melt when heated, while others are not affected by heat.
Some liquids boil when heated and turn to vapour.
Similarly, when liquids are cooled down, some turn solid (in a process called 'freezing') and, amazingly, you can cool some gases down enough to turn them back into liquids (that's called 'condensing').
In this worksheet think about the materials in the questions, what you have learned about them, and use that information to help you to answer the question.
