Question

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

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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