What is a chemical change?
6.6E Evidence of Chemical Change

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Science
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8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A chemical change is a process where substances combine or break apart to form new substances with different properties.
2.
FLASHCARD QUESTION
Front
What are some signs that a chemical reaction has occurred?
Back
Signs of a chemical reaction include: formation of a gas, color change, temperature change, and formation of a precipitate.
3.
FLASHCARD QUESTION
Front
What is rusting?
Back
Rusting is a chemical reaction that occurs when iron reacts with oxygen and moisture, forming iron oxide (rust).
4.
FLASHCARD QUESTION
Front
What does it mean when a gas is formed during a reaction?
Back
The formation of a gas indicates that a chemical reaction has occurred, often resulting in new substances being produced.
5.
FLASHCARD QUESTION
Front
What is a precipitate?
Back
A precipitate is a solid that forms and settles out of a liquid mixture during a chemical reaction.
6.
FLASHCARD QUESTION
Front
How can temperature changes indicate a chemical reaction?
Back
A temperature change during a reaction suggests that energy is being absorbed or released, indicating a chemical change.
7.
FLASHCARD QUESTION
Front
What is the difference between a physical change and a chemical change?
Back
A physical change alters the form of a substance without changing its chemical composition, while a chemical change results in the formation of new substances.
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