Classification of Matter ICP

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What is a homogeneous mixture?

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A homogeneous mixture is a mixture that has a uniform composition throughout, meaning that the different components are not distinguishable from one another. Example: Sweet tea.

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What is a heterogeneous mixture?

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A heterogeneous mixture is a mixture where the components are not uniformly distributed and can be easily distinguished. Example: A salad with lettuce, olives, and tomatoes.

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What defines a pure substance?

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A pure substance is a material that has a constant composition and consistent properties throughout. It can be an element or a compound.

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What is an element?

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An element is a pure substance that cannot be broken down into simpler substances by chemical or physical means. Examples include hydrogen, oxygen, and gold.

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What is a compound?

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A compound is a substance formed when two or more elements are chemically bonded together. Example: Water (H2O) is a compound made of hydrogen and oxygen.

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What is a mixture?

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A mixture is a combination of two or more different substances that are physically combined but not chemically bonded. Example: Air is a mixture of gases.

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What is the difference between a physical change and a chemical change?

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A physical change alters the form or appearance of a substance without changing its chemical composition (e.g., melting ice). A chemical change results in the formation of new substances (e.g., baking a cake).

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What is an example of a physical change?

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An example of a physical change is melting ice into water.

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What is an example of a chemical change?

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An example of a chemical change is baking a cake, where ingredients undergo a chemical reaction to form a new product.

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What is the periodic table?

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The periodic table is a tabular arrangement of chemical elements, organized by their atomic number, electron configuration, and recurring chemical properties.