Mixing Substances

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What is a mixture?

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A mixture is two or more substances combined together, but substances retain their original properties (no chemical reaction occurs).

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What is a substance?

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Matter with the same composition and properties throughout. This is also defined as a compound.

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What is a chemical reaction?

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A process in which one or more substances combine to form one or more new substances.

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What is a physical change?

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A change in the shape or appearance of an object, but a new substance does not form.

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What is a compound?

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A substance formed when two or more elements are chemically bonded together.

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What is the difference between a mixture and a compound?

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A mixture is a combination of substances that retain their properties, while a compound is a substance formed from two or more elements that are chemically bonded.

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Can the components of a mixture be separated?

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Yes, the components of a mixture can be separated by physical means.

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What is an example of a mixture?

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Salad is an example of a mixture, as it contains various ingredients that retain their individual properties.

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What is an example of a chemical reaction?

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Burning wood is an example of a chemical reaction, as it produces new substances like ash and smoke.

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What happens during a physical change?

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During a physical change, the form or appearance of a substance changes, but its chemical composition remains the same.