Molecules, pH, changes test review

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What is a chemical property?

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A characteristic of a substance that becomes evident during a chemical reaction, indicating how it interacts with other substances.

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What is a homogenous mixture?

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A mixture that has a uniform composition and appearance throughout, such as lemonade.

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What is a chemical change?

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A process where a substance transforms into a new substance with different properties, such as burning cookies.

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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 its chemical identity, like color or boiling point.

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What is the Law of Conservation of Mass?

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A principle stating that mass cannot be created or destroyed in a chemical reaction; it remains constant.

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What is an example of a physical change?

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Melting ice into water, where the substance remains H2O.

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What is an example of a chemical property?

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Flammability, which indicates how a substance reacts with fire.

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What happens during a chemical reaction?

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Reactants are transformed into products, resulting in the formation of new substances.

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What distinguishes a homogenous mixture from a heterogenous mixture?

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A homogenous mixture has a consistent composition, while a heterogenous mixture has visibly different components.

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What is an example of a chemical change in everyday life?

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Rust forming on iron when it reacts with oxygen and moisture.