Physical & Chemical properties & changes-Ms J

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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.

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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, such as changes in state or shape.

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What is a Chemical Property?

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A characteristic of a substance that describes its ability to undergo a specific chemical change, such as reactivity with acids or 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, such as color, density, or melting point.

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Example of a Chemical Change?

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Burning wood, where the wood transforms into ash, smoke, and gases.

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Example of a Physical Change?

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Melting ice into water, where the ice changes state but remains H2O.

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What does Flammable mean?

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A chemical property indicating that a substance can easily ignite and burn in the presence of an open flame.

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What happens during Baking Cookies?

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A chemical change occurs as ingredients react to form new substances, resulting in cookies.

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What is the difference between Physical and Chemical Changes?

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Physical changes do not alter the chemical composition of a substance, while chemical changes result in the formation of new substances.

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What is an example of a Physical Property?

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Color, such as the blue color of copper sulfate.