1) What happens to the particles of a solid when it melts? a) They break apart completely. b) They lose energy and stop moving. c) They move slower and stay in place. d) They gain energy and move more freely. 2) Freezing is the change from: a) Liquid to gas b) Gas to solid c) Solid to liquid d) Liquid to solid 3) What is the purpose of writing the method in an experiment? a) To waste time b) To confuse others c) To record results d) To explain how the experiment was done 4) Which is the best example of a conclusion? a) I used 2 cups of water. b) The pot was blue and big. c) Plants grow faster with sunlight. d) The plant grew 5 cm after 7 days. 5) How would you design an experiment to test which material melts ice faster: sand, salt, or sugar? a) Write a story. b) Make a graph first. c) Ask your friend to do it. d) Plan steps, list materials, keep variables constant.

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