Physical Chemical Changes & Properties

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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 identity, such as color, shape, or state.

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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, indicating how a substance behaves in a chemical change.

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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 changing shape, state, or size.

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What is a chemical change?

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A change that results in the formation of new chemical substances, often indicated by signs such as color change, gas formation, or temperature change.

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What is an example of a physical property?

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

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What is an example of a chemical property?

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Reactivity with acids, flammability, and the ability to oxidize are examples of chemical properties.

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What indicates that a chemical reaction has occurred?

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Signs include the formation of a gas, color change, temperature change, and the formation of a precipitate.

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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 new substances being formed.

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What is the significance of conductivity as a property?

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Conductivity is a physical property that indicates a substance's ability to conduct electricity, which is important in various applications.

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How can you identify a physical change?

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A physical change can be identified if the substance retains its original properties and can often be reversed, such as melting ice.