SME
Grade 7 Science · Problem type
Heat in or heat out?
Use this for “Which change needs thermal energy to be added?”
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Does the change take in heat or give it out?
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Assumptions
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Warming and melting take energy in; cooling and freezing give it out.
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Evaporation cools your skin because the leaving particles take heat with them.
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Related lessons
States of matter and phase changes
Main lesson
Heating curve of water
Use this for “What is the temperature 30 minutes into heating the ice, and what state is it in?”
Name the change
Use this for “Which is an example of water condensing?”
Solid, liquid or gas at room temperature?
Use this for “At 20 °C, is the substance a solid, a liquid or a gas?”
Water left in an open cup
Use this to record how much water is left in an open cup each day.