What happens when a substance undergoes a physical change

HERES ALL THE TEST ANSWERS

Explanation:

Physical Properties

1-What happens when a substance undergoes a physical change?

answer-Some physical properties change, but the substance keeps its identity.

2-What is an example of a physical change?

answer-ice forming and then melting back into water

3-When liquid gold becomes a solid, its particles get closer together. Which best describes what happened to the gold?

answer-the rearrangement of particles in a physical change

4-Eugene describes the physical property of a material as “sweet and floral.” What physical property of the material is Eugene most likely observing?

answer-odor

5-Which can occur during physical change?

answer-The particles can arrange in different ways.

6-If there is 8 g of a substance before a physical change, how much will there be afterwards?

answer- 8 grams

7-Which statement about the physical change of liquid water boiling into steam is true?

answer-the heat added represents an energy change

8-Fifteen grams of a liquid plastic are frozen in a physical change that increases the volume. What can be known about the plastic after the change?

answer- it will still weigh 15 grams

9-Which statement best compares and contrasts two physical properties of matter?

answer-Boiling points and melting points are similar because they both involve the change in a state of a material, but they are different because boiling point involves a change from a liquid to a gas and melting point involves a change from a solid to a liquid.

10-Serena is mixing a material into a beaker filled with a liquid. She notices that the material seems to disappear into the liquid. What physical property of the material is Serena most likely observing?

answer-solubility

the answer is c.

by: nicholas dooley