Which of the following IS a physical change? boiling water, iron oxidizing (rusting), sour milk, burning paper
Unit 2 Review

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Other, Physics
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4th - 8th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
boiling water
2.
FLASHCARD QUESTION
Front
Rayon is a synthetic material. Because it's synthetic, what is rayon most likely made from?
Back
Natural resources such as coal, water, petroleum (oil) or plants.
3.
FLASHCARD QUESTION
Front
If there are 18 atoms of oxygen in the reactants, how many atoms of oxygen will there be in the products?
Back
18
4.
FLASHCARD QUESTION
Front
How does the mass of the reactants in the equation compare to the mass of the products?
Back
It's the same.
5.
FLASHCARD QUESTION
Front
A chemical reaction that absorbs energy is called an
Back
endothermic reaction
6.
FLASHCARD QUESTION
Front
When two substances were mixed they produced bubbles, changed color and produced an odor. This was most likely a
Back
chemical change
7.
FLASHCARD QUESTION
Front
Synthetic fibers are made from raw materials that go through:
Back
chemical changes
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