Matter Review

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What is a heterogeneous mixture?

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A mixture that has visually distinguishable components, meaning the different substances can be seen and separated easily.

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What is a homogeneous mixture?

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A mixture that appears uniform throughout, meaning the different components are not distinguishable and are evenly distributed.

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What are the two types of pure substances?

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Elements and compounds.

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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, such as mass, color, or boiling point.

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What is a chemical property?

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A characteristic of a substance that describes its ability to undergo a specific chemical change, such as reactivity with water.

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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 melting or freezing.

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What is a chemical change?

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A change that results in the formation of new chemical substances, such as rusting or burning.

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What is the difference between reactants and products in a chemical reaction?

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Reactants are the starting substances that undergo a chemical change, while products are the new substances formed as a result of the reaction.

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What is an element?

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A pure substance that cannot be broken down into simpler substances by chemical means, consisting of only one type of atom.

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What is a compound?

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A pure substance formed when two or more elements chemically combine in a fixed ratio, such as water (H2O).