AnswersPhysical ScienceProperties and Changes of Matter

Properties and Changes of Matter — Test Answers

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1
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In what order would the liquids would arrange themselves, from top to bottom?

A
purple, green, blue, red.
B
blue, red, purple, green.
C
purple, green, red, blue.
D
blue, red, green, purple.
2
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What is true about all of these atoms?

A
They cannot be solids.
B
They are the only types of atoms that exist.
C
They are the largest units of matter.
D
They cannot be divided and still keep the properties of the element.
3

Which sample material(s) could be liquid?

A
W and Y
B
X, W, and Y
C
Z
D
X
4

Which object has the most mass?

A
cap w
B
cap x
C
cap y
D
cap z
5

Which Venn diagram accurately describes what characteristics of solids, liquids, and gasses could be added to this diagram?

A
Image with description Overlapping circles are labeled definite shape least dense at top, definite mid-level density at right, most dense at left, with the intersection of all three labeled state of matter. The intersection of the left and right circles is labeled definite shape.
B
Image with description Overlapping circles are labeled definite shape most dense at top, mid-level density at right, least dense at left, with the intersection of all three labeled state of matter. The intersection of the top and right circles is labeled definite volume.
C
Image with description Overlapping circles are labeled definite shape most dense at top, mid-level density at right, definite volume least dense at left, with the intersection labeled state of matter.
D
Image with description Overlapping circles are labeled definite shape most dense at top, definite volume mid-level density at right, least dense at left, with the intersection of all three labeled state of matter. The intersection of the left and right circles is labeled definite shape.
6

Which student made a mistake in her statement?

A
Irma
B
Masha
C
Grace
D
Julia
7

Which would show an example of how physical changes are reversible?

A
combining sodium and chlorine to make the new material of table salt
B
cutting a gold bar in two pieces and then putting the pieces next to each other
C
burning a match and then relighting it
D
melting tin and then cooling it into a mold
8

The density of an object is point 8 3 5 the fraction with numerator g and denominator cm cubed If its volume is 34 cm cubed , what is the mass of the object? (Density: cap d is equal to m over v )

A
point 4 1 g
B
28 point 3 9 g
C
point 0 2 g
D
40 point 7 2 g
9

Rahul sees a flock of birds. He watches as the flying birds land in neat little rows on several power lines. Which change of state does the motion of the birds most closely model?

A
sublimation
B
melting
C
vaporization
D
deposition
10

Which is most likely a physical change?

A
combining a substance with water to make rust
B
burning a substance into ash and smoke
C
cutting a substance into four pieces
D
reacting a substance chemically to form a new substance
11

Tijuan mixed a solid and a liquid together in a beaker. He determined that a chemical change occurred. If his conclusion is correct, which substances could he have been observing and why?

A
sand mixed into water, because when sand was added the mass of the beaker increased
B
baking soda mixed into vinegar, because the production of bubbles indicates that a new substance formed
C
ice mixed into warm oil, because the change of state that occurred when the ice melted cannot be reversed
D
sugar mixed into hot water, because the disappearance of solid indicates that the chemical identity of the sugar changed
12

A substance occupies one half of an open container. The atoms of the substance are closely packed but are still able to slide past each other. What is most likely the phase of the substance?

A
liquid and solid
B
gas
C
solid and gas
D
liquid
13

The density of solid aluminum is 2 point 7 0 the fraction with numerator g and denominator cm cubed If a 1 g piece of aluminum is dropped in a cup of water, what will happen to the aluminum? (The density of water is 1 point 0 0 the fraction with numerator g and denominator cm cubed )

A
It will sink to the bottom.
B
It will hover in the middle.
C
It will float to the top.
D
It will move up and down.
14

If two items are equal in size, the denser one will

A
have less volume.
B
be lighter.
C
have more volume.
D
be heavier.
15

Three grams of the same substance in different phases are stored in three different containers. Each container is barely large enough to hold the substance. Which statement can be known about the behavior of the atoms in each container?

A
The atoms in the liquid would be vibrating in position.
B
The atoms in the solid would be vibrating in position.
C
The atoms in the gas would be moving slowly around the container.
D
The atoms in the solid would be moving vigorously around the container.
16

During which change of state do atoms lose energy?

A
boiling
B
sublimation
C
melting
D
freezing
17

Which describes a feature of the physical changes of all substances?

A
can conduct heat and electricity
B
can dissolve in water
C
does not change the identity of a substance
D
rearranges atoms to form new substances
18

Suppose that a substance in a beaker is heated over a burner in a science lab. Which observation would most likely indicate that a chemical change has occurred in the substance?

A
If the substance is a liquid, a change of some of the liquid to gaseous form would indicate a chemical change.
B
If the substance is a liquid or solid, an increase in temperature would indicate a chemical change.
C
If the substance is a solid, a change of some of the solid to liquid form would indicate a chemical change.
D
If the substance is a liquid or solid, production of an odor would indicate a chemical change.
19

What is the density of a 700 kg object with a volume of 649 m 3 ? (Density: cap d is equal to m over v )

A
0 point 9 2 7 the fraction with numerator kg and denominator m cubed
B
4 point 5 4 3 the fraction with numerator kg and denominator m cubed
C
1 point 0 7 9 the fraction with numerator kg and denominator m cubed
D
point 4 5 4 3 the fraction with numerator kg and denominator m cubed
20

Which is the process by which a gas changes to a solid?

A
sublimation
B
deposition
C
freezing
D
evaporation

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