Chemical and Physical Change Exit Ticket 3 (S5P1.a,c)

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What is a chemical change?

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A chemical change is a process where substances combine or break apart to form new substances, often accompanied by energy changes, color changes, or gas production.

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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 changes in state, shape, or size.

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What indicates a chemical change has occurred?

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Indicators of a chemical change include the production of gas, color change, temperature change, or the formation of a precipitate.

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What happens to the substances in a physical change?

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In a physical change, the substances retain their original properties and can often be separated back into their original forms.

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Can a chemical change be reversed?

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Chemical changes are usually not reversible by simple physical means, as new substances are formed.

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Can a physical change be reversed?

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Yes, physical changes can often be reversed, such as freezing and melting water.

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What is an example of a chemical change?

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An example of a chemical change is the reaction between vinegar and baking soda, which produces carbon dioxide gas.

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What is an example of a physical change?

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An example of a physical change is breaking a glass mug; the glass is still glass, just in smaller pieces.

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What happens to the temperature during a chemical change?

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During a chemical change, the temperature may change as energy is absorbed or released.

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What is a precipitate?

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A precipitate is a solid that forms and settles out of a liquid mixture during a chemical reaction.