What is a physical change?
Chemical & Physical Changes CFU

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Chemistry
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9th - 12th 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) and changes in 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 the rearrangement of atoms. Examples include rusting, burning, and digestion.
3.
FLASHCARD QUESTION
Front
What happens to water when it freezes?
Back
When water freezes, it undergoes a physical change from liquid to solid. The chemical composition (H2O) remains the same.
4.
FLASHCARD QUESTION
Front
What happens to ice when it melts?
Back
When ice melts, it undergoes a physical change from solid to liquid. The chemical composition (H2O) remains unchanged.
5.
FLASHCARD QUESTION
Front
What is evaporation?
Back
Evaporation is the process by which liquid water turns into vapor. It is a physical change as the chemical composition of water remains the same.
6.
FLASHCARD QUESTION
Front
What is an example of a chemical change in the human body?
Back
Digesting food is an example of a chemical change, as it involves breaking down food into new substances through chemical reactions.
7.
FLASHCARD QUESTION
Front
What is the difference between a physical change and a chemical change?
Back
A physical change does not alter the chemical composition of a substance, while a chemical change results in the formation of new substances.
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