Lessons 1, 2, and 3 Review
Flashcard
•
Science
•
7th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the law of conservation of matter?
Back
Matter cannot be created or destroyed; it can only change forms.
2.
FLASHCARD QUESTION
Front
All matter is made of _____________.
Back
Particles.
3.
FLASHCARD QUESTION
Front
What happens when a bath bomb is mixed with water?
Back
The gas produced is a result of the ingredients/chemicals mixing with water.
4.
FLASHCARD QUESTION
Front
What is a closed system?
Back
A system where no matter enters or leaves, like a sealed water bottle with a bath bomb.
5.
FLASHCARD QUESTION
Front
Is the gas that escapes from a closed system considered new matter?
Back
No, it is not new matter; it is a transformation of existing matter.
6.
FLASHCARD QUESTION
Front
Define matter.
Back
Anything that has mass and takes up space.
7.
FLASHCARD QUESTION
Front
What are particles?
Back
The small units that make up all matter, including atoms and molecules.
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