Chemical and Physical Change and States of Matter Review

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What is a solid?

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A state of matter where molecules are tightly packed together, maintaining a fixed shape and volume.

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What is a liquid?

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A state of matter where molecules are close together but can move past one another, taking the shape of their container.

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What is a gas?

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A state of matter where molecules are far apart and move freely, filling the entire volume of their container.

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What is plasma?

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A state of matter similar to gas but consists of charged particles, found in stars and lightning.

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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.

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What is a chemical change?

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A change that results in the formation of one or more new substances with different properties.

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What is an example of a physical change?

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Melting ice into water.

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What is an example of a chemical change?

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A nail rusting.

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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 identity.

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What is a chemical property?

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A characteristic that can only be observed during a chemical reaction, indicating how a substance interacts with other substances.