Physical and Chemical properties and changes.

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What is a Chemical Change?

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A process where substances combine or break apart to form new substances, often accompanied by energy changes, color changes, or gas production. Example: Burning wood.

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What is a Physical Change?

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A change that affects one or more physical properties of a substance without altering its chemical composition. Example: Folding origami.

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What is a Chemical Property?

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A characteristic of a substance that describes its ability to change into different substances. Example: Flammability.

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What is a Physical Property?

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A characteristic of a substance that can be observed or measured without changing the substance's chemical identity. Example: Malleability.

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What happens during Burning Wood?

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It undergoes a chemical change, producing ash, smoke, and gases.

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What happens during Folding Origami?

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It is a physical change, as the paper's shape changes but its chemical composition remains the same.

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What does Flammable mean?

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It describes a substance's ability to catch fire and burn easily, indicating a chemical property.

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What does Malleability refer to?

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The ability of a substance, usually a metal, to be deformed or shaped under pressure without breaking, indicating a physical property.

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What is an example of a Physical Change?

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Getting a haircut, as it changes the appearance but not the chemical structure of the hair.

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What is an example of a Chemical Change?

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Rusting of iron, where iron reacts with oxygen to form iron oxide.