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Physical Properties Answers

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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
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

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
4

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

A
Density and solubility are similar because they both involve water, but they are different because density involves dissolving a material and solubility involves floating or sinking a material.
B
Density and solubility are similar because they both involve a material’s mass and volume, but they are different because density involves floating materials and solubility involves sinking materials.
C
Boiling points and melting points are similar because they both involve changing the heat of a material, but they are different because boiling point involves adding heat to a material and melting point involves removing heat from a material.
D
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.
5

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.
6

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.
7

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

A
the conservation of magnetism
B
the change in solubility in a physical change
C
the change in melting point in a physical change
D
the rearrangement of particles in a physical change
8

Liquid plastic is frozen in a physical change that increases its volume. What can be known about the plastic after the change?

A
Its mass will increase.
B
Its density will increase.
C
Its mass will remain the same.
D
Its density will remain the same.
9

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.
10

What happens when a substance undergoes a physical change?

A
Some physical properties change, but the substance keeps its identity.
B
No physical properties change, and the substance keeps its identity.
C
Some physical properties change, and the substance changes its identity.
D
No physical properties change, but the substance changes its identity.

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