Properties of Matter

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What is a physical change?

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A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

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What is a chemical change?

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A chemical change is a change that results in the formation of new chemical substances, involving the breaking and forming of bonds between atoms.

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What is an example of a physical change?

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Melting ice is an example of a physical change, as it changes from solid to liquid without changing its chemical structure.

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What is an example of a chemical change?

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Rusting of iron is an example of a chemical change, as it forms a new substance (iron oxide) through a reaction with oxygen.

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What happens to the arrangement of atoms in a physical change?

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In a physical change, the arrangement and motion of atoms change, but the atoms themselves remain the same.

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What happens to the arrangement of atoms in a chemical change?

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In a chemical change, atoms bond together differently, resulting in the formation of new substances.

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What is reactivity in terms of properties of matter?

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Reactivity is a chemical property that describes how readily a substance combines chemically with other substances.

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What is a sign of a physical change?

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Stretching is a sign of a physical change, as it alters the shape or form of a substance without changing its chemical identity.

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What is the difference between physical and chemical properties?

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Physical properties can be observed without changing the substance's chemical identity, while chemical properties can only be observed during a chemical reaction.

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What is an example of a physical property?

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Color, density, and melting point are examples of physical properties.