17. In separating pieces of metals from one another, use a magnet. * A. True O B. False 18. The cooling of hot coffee to make it enough to drink involves evaporation. * A. True B. False 19. Oil and water can be separated by decantation. * A. True B. False

17. In separating pieces of metals from one another, use a magnet. * A. True O B. False 18. The cooling of hot coffee to make it enough to drink involves evaporation. * A. True B. False 19. Oil and water can be separated by decantation. * A. True B. False

Chemistry In Focus

7th Edition

ISBN:9781337399692

Author:Tro, Nivaldo J.

Publisher:Tro, Nivaldo J.

Chapter9: Energy For Today

Section: Chapter Questions

Problem 14E

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Concept explainers

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.

Question

17. In separating pieces of metals from one another, use a magnet. *
A. True
B. False
18. The cooling of hot coffee to make it enough to drink involves
evaporation. *
A. True
B. False
19. Oil and water can be separated by decantation.
A. True
B. False
20. In separating fine and coarse particles of flour when baking, use
sieving. *
A. True
O B. False

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