Test- Unit 2 Matter Flashcards
1
Q
- When 2 or more substances are physically combined, the result is a
A
A. Mixture
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2
Q
- What speeds up dissolving solids in water
A
D. Stir the solution
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3
Q
- What is chemically joining 2 or more elements called?
A
A. Compound
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4
Q
- What term best describes when particles escape from the surface of a liquid and become gaseous?
A
B. Evaporation
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5
Q
- Law of conservation of matter states
A
D. Mass is not lost or created during a chemical change
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6
Q
- Iron and oxygen react to form rust. What will happen to the mass of the rust compared to the mass of the iron and oxygen before the reaction? Explain why this will occur.
A
Same because the law of conservation of matter states matter cannot be created or destroyed during a chemical change.
(U2c2)