What is a physical change?
Physical and Chemical Changes Review

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Science
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8th Grade
•
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 bending.
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 includes changes such as rusting, burning, and digestion.
3.
FLASHCARD QUESTION
Front
How does temperature affect chemical reactions?
Back
Higher temperatures usually cause chemical reactions to happen faster due to increased energy and movement of particles.
4.
FLASHCARD QUESTION
Front
What is an example of a physical change?
Back
Filling an ice cube tray with water that freezes into ice cubes is an example of a physical change.
5.
FLASHCARD QUESTION
Front
What is a sign of a chemical change?
Back
A sign of a chemical change is the production of a new odor, color change, gas formation, or the formation of a precipitate.
6.
FLASHCARD QUESTION
Front
Is painting a door a physical or chemical change?
Back
Painting a door is an example of a physical change because the paint can be removed without changing the door's chemical structure.
7.
FLASHCARD QUESTION
Front
What happens to the properties of a substance during a physical change?
Back
The properties of a substance may change (like shape or state), but its chemical identity remains the same.
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