Physical and Chemical Changes
Flashcard
•
Chemistry
•
7th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a physical change?
Back
A physical change alters the physical properties of a substance but does not create a new substance.
2.
FLASHCARD QUESTION
Front
What is a chemical change?
Back
A chemical change results in the formation of one or more new substances and cannot be easily reversed.
3.
FLASHCARD QUESTION
Front
Give an example of a physical change.
Back
Melting ice is an example of a physical change.
4.
FLASHCARD QUESTION
Front
Give an example of a chemical change.
Back
Burning wood is an example of a chemical change.
5.
FLASHCARD QUESTION
Front
What happens to the molecules during a physical change?
Back
The molecules rearrange but do not change their chemical structure.
6.
FLASHCARD QUESTION
Front
What happens to the molecules during a chemical change?
Back
The molecules break apart and form new molecules with different chemical structures.
7.
FLASHCARD QUESTION
Front
Is dissolving sugar in water a physical or chemical change?
Back
Dissolving sugar in water is a physical change.
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