What is a chemical change?
Evidence of Chemical Change

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•
Science
•
6th - 8th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
A change in which new substances are formed.
2.
FLASHCARD QUESTION
Front
What happens when milk and vinegar are mixed?
Back
A chemical change occurs, resulting in a precipitate.
3.
FLASHCARD QUESTION
Front
How can you identify a chemical change?
Back
Look for signs such as color change, gas production, or formation of a precipitate.
4.
FLASHCARD QUESTION
Front
What is a physical change?
Back
A change that does not alter the chemical composition of a substance.
5.
FLASHCARD QUESTION
Front
Which of the following is NOT a chemical change: sour milk, burning wood, breaking a pencil, rust?
Back
Breaking a pencil is NOT a chemical change.
6.
FLASHCARD QUESTION
Front
What is a precipitate?
Back
A solid that forms and settles out of a liquid mixture during a chemical reaction.
7.
FLASHCARD QUESTION
Front
Can a chemical change be reversed?
Back
Most chemical changes are not easily reversible.
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