Classification of Matter and Periodic Table

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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. Examples include solutions like saltwater and chocolate ice cream.

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What is a heterogeneous mixture?

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A heterogeneous mixture is a mixture that does not have a uniform composition and the different components can be seen. Examples include salad and sand.

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What can be physically separated?

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A mixture can be physically separated into its components.

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What are metalloids?

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Metalloids are elements that have properties of both metals and nonmetals. They are found along the staircase line on the periodic table.

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What is a property of metals?

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Metals are typically malleable, lustrous, and conductive, but they are not brittle.

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What is a physical property?

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A physical property is a characteristic of a substance that can be observed or measured without changing its identity, such as color, melting point, and boiling point.

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What is a chemical property?

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A chemical property is a characteristic that can only be observed during a chemical reaction, such as reactivity with acids or flammability.

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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, such as melting or evaporating.

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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, such as rusting or burning.

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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 means. Examples include hydrogen, oxygen, and gold.