Test- Unit 2 Matter Flashcards

1
Q
  1. When 2 or more substances are physically combined, the result is a
A

A. Mixture

U2c4

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2
Q
  1. What speeds up dissolving solids in water
A

D. Stir the solution

U2c4

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3
Q
  1. What is chemically joining 2 or more elements called?
A

A. Compound

U3c2

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4
Q
  1. What term best describes when particles escape from the surface of a liquid and become gaseous?
A

B. Evaporation

U2c3

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5
Q
  1. Law of conservation of matter states
A

D. Mass is not lost or created during a chemical change

U2c2

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6
Q
  1. 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)

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