What is a physical change?
Physical and Chemical Changes

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•
Science
•
9th 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 changes in state (like melting or freezing), shape, or size.
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, or cooking.
3.
FLASHCARD QUESTION
Front
What is a sign that a chemical reaction has occurred?
Back
Formation of a gas, change in color, temperature change, or the production of light are signs that a chemical reaction has occurred.
4.
FLASHCARD QUESTION
Front
Is melting butter for popcorn a chemical or physical change?
Back
Melting butter for popcorn is a physical change because it does not change the chemical composition of the butter.
5.
FLASHCARD QUESTION
Front
Which of the following is NOT an example of a physical change?
Back
Rust is NOT an example of a physical change; it is a chemical change.
6.
FLASHCARD QUESTION
Front
What happens during a chemical change?
Back
During a chemical change, the bonds between atoms are broken and new bonds are formed, resulting in new substances.
7.
FLASHCARD QUESTION
Front
What is an example of a physical change?
Back
Evaporating water is an example of a physical change.
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