Chemical/Physical Properties & Changes

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What is a Chemical Change?

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A process where one or more new substances are formed, often accompanied by energy changes, color changes, or gas production. Example: Cooking pancakes.

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What is a Physical Change?

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A change that does not alter the chemical composition of a substance. Example: Melting ice.

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What is Solubility?

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The ability of a substance to dissolve in a solvent, such as sugar dissolving in water. It is a physical property.

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What is a Chemical Property?

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A characteristic of a substance that can only be observed during a chemical reaction. Example: Reactivity with acid.

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What is a Physical Property?

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A characteristic of a substance that can be observed without changing its chemical identity. Example: Color, odor, density.

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Is burning wood a physical or chemical change?

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Chemical Change - it produces new substances like ash and smoke.

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What happens during a Chemical Change?

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New substances are formed, and the original substances lose their properties.

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What is an example of a Physical Change?

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Freezing water into ice.

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What is the difference between a Chemical Change and a Physical Change?

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Chemical changes create new substances; physical changes do not.

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What is an example of a Chemical Property?

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Flammability - the ability of a substance to catch fire.