What is a chemical change?
Chemical Vs Physical Changes

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•
Science
•
7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A chemical change is a process that results in the formation of one or more new substances.
2.
FLASHCARD QUESTION
Front
What is a physical change?
Back
A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.
3.
FLASHCARD QUESTION
Front
Give an example of a chemical change.
Back
Burning wood, rusting of iron, and cooking food are all examples of chemical changes.
4.
FLASHCARD QUESTION
Front
Give an example of a physical change.
Back
Melting ice, dissolving sugar in water, and bending a paperclip are examples of physical changes.
5.
FLASHCARD QUESTION
Front
What indicates that a chemical reaction has occurred?
Back
The formation of a gas, change in color, or production of heat are indicators of a chemical reaction.
6.
FLASHCARD QUESTION
Front
What is the best definition of a chemical reaction?
Back
A change in matter that produces one or more new substances.
7.
FLASHCARD QUESTION
Front
What happens to molecules during a chemical change?
Back
During a chemical change, the bonds between molecules are broken and new bonds are formed, resulting in new substances.
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