AnswersAA-F26 Physical SciencePhysical Properties

1.1 Physical Properties Answers

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What is an example of a physical change?

A
having less ash than the paper that was burned to form it
B
ice forming and then melting back into water
C
rust having a different identity than the iron it forms on
D
the irreversible reaction of vinegar and baking soda
2
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Which scenario is an example of a physical change?

A
Wood is burned in a campfire and is turned into ash and smoke.
B
A piece of metal is left in the rain and forms rust.
C
Lead is melted into a liquid to form pellets.
D
Yeast turns sugar into energy, water, and carbon dioxide gas.
3

A soft, silvery-white metal combines with a yellow gas to form a white crystal-like solid. What can be said about this change?

A
The change is a physical change because the yellow gas changed into a solid.
B
The change is a physical change because a new substance was not formed.
C
The change is not a physical change because the color of the metal changed.
D
The change is not a physical change because a new substance was formed.
4

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

A
The heat added represents an energy change.
B
The action cannot be reversed.
C
The steam cannot conserve mass.
D
The weight lost represents a mass change.
5

Wax melts when it is heated. Which most likely describes what is true of the result of this reaction?

A
The bonding of the atoms is not the same before and after the change.
B
The wax has the same density before and after the change.
C
The same amount of wax exists before and after the change.
D
The wax cannot be changed back into a solid.
6

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

A
0 g
B
4 g
C
8 g
D
16 g
7

Which can occur in a physical change?

A
The mass can increase.
B
The particles can arrange in different ways.
C
The mass can decrease.
D
The atoms can bond to different atoms.
8

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

A
boiling point
B
shape
C
hardness
D
odor
9

Which is the property of matter in which a substance can transfer heat or electricity?

A
magnetism
B
conductivity
C
density
D
solubility
10

Water is made of two hydrogen atoms and one oxygen atom bonded together. Julia is describing how water undergoes a physical change when it boils. She says that the particles shift to be farther apart and that the oxygen and hydrogen separate. She also says that the total mass of the steam is the same as the initial water, and that heat energy was required to cause the change. She finishes her description by saying that the steam can be turned back into water if it is cooled.Which is the mistake in her description?

A
The total mass remains the same in physical changes.
B
The arrangement of particles may change in physical changes.
C
Atoms remain bonded to each other in physical changes.
D
Energy changes may occur in physical changes.

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1.1 Physical Properties Answers — AA-F26…