Let's evaluate each statement one by one:
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When ice cream melts, a chemical change occurs. - False (Melting is a physical change; the composition of the ice cream does not change.)
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Acid rain damaging a marble statue is a physical change. - False (This is a chemical change, as the acid reacts with the calcium carbonate in the marble.)
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Burning wood is a physical change. - False (Burning is a chemical change; it transforms the wood into different substances.)
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Breaking up concrete is a physical change. - True (Breaking concrete changes its form but not its chemical composition.)
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Combining hydrogen and oxygen to make water is a physical change. - False (This is a chemical change; it involves a chemical reaction to form a new substance.)
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Sand being washed out to sea from the beach is a chemical change. - False (This is a physical change; the sand retains its composition.)
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Changing the size and shapes of pieces of wood would be a chemical change. - False (This is a physical change since the wood's chemical composition remains the same.)
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Evaporation is a physical change. - True (Evaporation changes the state of the liquid to a gas without altering its chemical composition.)
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In a physical change, the makeup of matter is changed. - False (In a physical change, the makeup of the matter remains the same; only the form or appearance changes.)
Overall evaluations:
- True Statements: 4, 8
- False Statements: 1, 2, 3, 5, 6, 7, 9
1 answer