Think carefully about each option below. Which term best describes each? You may use choices more than once.(8 points). copper compounds are green when burning brown sugar is baked into a delicious cookie a leaf changes color fog condenses sugar melts aluminum cans are crushed copper compound burns metals conduct electricity

Question

physical property
chemical property
physical change
chemical change

Answer 1

Here are the terms that best describe each option:

1. Copper compounds are green when burning - Chemical property (the color change indicates a chemical reaction).
2. Brown sugar is baked into a delicious cookie - Chemical change (baking involves chemical reactions changing the components of sugar).
3. A leaf changes color - Chemical change (the change in color of the leaf is a result of chemical changes, such as the breakdown of chlorophyll).
4. Fog condenses - Physical change (this is a change in state from gas to liquid, without altering the chemical composition).
5. Sugar melts - Physical change (the melting of sugar is a change in state from solid to liquid without a change in its chemical composition).
6. Aluminum cans are crushed - Physical change (this is a change in shape and size, not in chemical composition).
7. Copper compound burns - Chemical change (the act of burning involves a reaction that changes the chemical structure of the compound).
8. Metals conduct electricity - Physical property (this describes a characteristic of metals regarding their ability to conduct electricity without changing chemically).

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