What is a physical change?
Big Idea 9: Physical and Chemical Changes

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•
Science
•
4th 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 boiling.
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. Examples include burning, rusting, and cooking.
3.
FLASHCARD QUESTION
Front
What happens to a substance during a physical change?
Back
The substance may change its form or appearance, but its chemical identity remains the same.
4.
FLASHCARD QUESTION
Front
What happens to a substance during a chemical change?
Back
The substance transforms into one or more new substances with different properties.
5.
FLASHCARD QUESTION
Front
Can a physical change be reversed?
Back
Yes, many physical changes can be reversed, such as freezing and melting.
6.
FLASHCARD QUESTION
Front
Can a chemical change be reversed?
Back
Most chemical changes cannot be easily reversed, as they create new substances.
7.
FLASHCARD QUESTION
Front
What is an example of a physical change?
Back
Water boiling is an example of a physical change.
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