What is a chemical change?
Physical and Chemical Changes

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•
Chemistry
•
10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A process where substances combine or break apart to form new substances, often accompanied by energy changes, color changes, gas production, or precipitate formation.
2.
FLASHCARD QUESTION
Front
What is a physical change?
Back
A change that affects one or more physical properties of a substance without altering its chemical composition, such as changes in state, shape, or size.
3.
FLASHCARD QUESTION
Front
Give an example of a chemical change.
Back
Burning wood, rusting iron, or digesting food.
4.
FLASHCARD QUESTION
Front
Give an example of a physical change.
Back
Melting ice, boiling water, or cutting paper.
5.
FLASHCARD QUESTION
Front
What is rust?
Back
A chemical change that occurs when iron reacts with oxygen and moisture, forming iron oxide.
6.
FLASHCARD QUESTION
Front
What happens during digestion?
Back
Food undergoes a chemical change as it is broken down into simpler substances by enzymes.
7.
FLASHCARD QUESTION
Front
What is fizzing an indicator of?
Back
Fizzing often indicates a chemical change, typically due to the release of gas.
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