What is a physical change?
Physical and Chemical Changes

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Science
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6th - 8th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Examples include melting, freezing, and dissolving.
2.
FLASHCARD QUESTION
Front
What is a chemical change?
Back
A chemical change is a change that results in the formation of new chemical substances. It involves a chemical reaction and can be indicated by color change, temperature change, gas production, or precipitate formation.
3.
FLASHCARD QUESTION
Front
What happens during cooking an egg?
Back
Cooking an egg is a chemical change because it transforms the proteins in the egg, resulting in a new substance with different properties.
4.
FLASHCARD QUESTION
Front
What is an indicator of a chemical change?
Back
Indicators of a chemical change include unexpected color changes, temperature changes, gas production (bubbles), and the formation of precipitates.
5.
FLASHCARD QUESTION
Front
What is an example of a new substance forming?
Back
Lighting a match is an example of a new substance forming, as it produces heat, light, and new chemical compounds.
6.
FLASHCARD QUESTION
Front
What does bubbling indicate when substances are combined?
Back
Bubbles forming when two or more substances are combined typically indicate a chemical change, as gas is being produced.
7.
FLASHCARD QUESTION
Front
What is NOT an indicator of a chemical change?
Back
Bubbles and steam rising from boiling salt water is NOT an indicator of a chemical change; it is a physical change.
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