AnswersTX-Integrated Physics and ChemistryLab: Motion

Lab: Motion — Cumulative exam Answers

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21
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Which contributes to the dissolution of sugar in water?

A
the dissociation of an ionic compound in water
B
a strong pull of water molecules on an ionic compound
C
the dissociation of a polar covalent compound in water
D
a strong pull of water molecules on a polar covalent compound
22
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Based on its location on the periodic table, which metal is likely to be less reactive than both strontium and sodium?

A
magnesium (Mg)
B
barium (Ba)
C
cesium (Cs)
D
rubidium (Rb)
23

A solution is oversaturated with solute. Which could be done to decrease the oversaturation?

A
dilute the solution
B
add more solute
C
cool the solution
D
add a different solute
24

Why is it advisable to wear long sleeves when students work in a chemistry lab?

A
to provide warmth near the lab refrigerator
B
to protect the arms from lab chemicals
C
to minimize burns from hot water at the lab sink
D
to prevent burns when using a Bunsen burner
25

In an investigation that uses the scientific method, which step immediately follows making a hypothesis?

A
summarizing the results
B
asking a question
C
making observations
D
designing an experiment
26

Zac releases the air from a balloon. Which statement best describes what will happen to the air that was inside the balloon?

A
It will become more compacted.
B
It will remain the shape of the balloon but not the size.
C
It will remain the size of the balloon but not the shape.
D
It will expand to fill the room.
27

Assuming the bull’s eye is the accepted value, which diagram shows results that are accurate and precise?

A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
28

Read the thermometer.

Question illustration
A
–8°
B
0°
C
25°
D
32°
29

This chart shows descriptions of the atoms for four different substances.

Question illustration
A
Object 1
B
Object 2
C
Object 3
D
Object 4
30

Two students are given two different size blocks of the same substance and are instructed to determine the properties of the substance. Which statement describes a property that will be the same for both students?

A
length because it is an extensive property
B
mass because it is an extensive property
C
boiling point because it is an intensive property
D
volume because it is an intensive property
31

Hsaio manages the finances for her company and has a particularly large amount of money budgeted for the purchase of calcium chloride, or CaCl2. Which type of company does Hsaio most likely own?

A
a snow-plowing service
B
a cosmetics factory
C
a pottery art studio
D
a catering business
32

This is how platinum appears in the periodic table.

Question illustration
A
78
B
117
C
195
D
273
33

This chart lists four elements from the periodic table.Atoms from which two elements would form ionic bonds?

Question illustration
A
calcium and gold
B
gold and argon
C
argon and iodine
D
iodine and calcium
34

Which statement best describes a relationship amongst hypotheses, theories, and laws?

A
A hypothesis is used to explain laws and theories.
B
A law is used to explain a hypothesis and theories.
C
A hypothesis combines several theories.
D
A theory combines several hypotheses.
35

Which statement best describes the explanatory powers of hypotheses and theories?

A
A hypothesis does not provide an explanation but instead only predicts what may happen.
B
A theory does not provide an explanation but instead only predicts what may happen.
C
The explanation given by a theory is well tested and supported by many observations and hypotheses.
D
The explanation given by a hypothesis is well tested and supported by many observations and theories.
36

Which is an example of negative acceleration?

A
a snowboarder who increases speed when traveling downhill
B
a biker who maintains a constant speed through a race
C
a skateboarder who reduces speed when moving up a hill
D
a runner who fluctuates speed by increasing and decreasing speed
37

When a drawing of a circle made in the center of a piece of paper with a black marker gets wet, the marker bleeds, and as the water moves through the paper the ink separates into several colors. What method of separation does this describe?

A
evaporation
B
distillation
C
filtration
D
chromatography
38

A sample of a solid nonmetal is compared to a sample of a solid metal. Both samples have the same volume. What is the most likely difference between the two samples?

A
The nonmetal has more mass.
B
The nonmetal takes up more space.
C
The metal has more mass.
D
The metal takes up more space.
39

Lucy is supposed to write down the lengths of 10 earthworms found near the playground at her school. She measures the earthworms’ lengths in millimeters, but she accidentally labels her data in centimeters.Which best describes this error in data collection?

A
The data are inadequate.
B
The data are false.
C
The data are recorded incorrectly.
D
The data cannot be reproduced.
40

Sudhi is studying the motion of a toy car. She places the car in the middle of a ramp and releases it.Which best describes the reference point in this scenario?

A
the top of the ramp
B
the bottom of the ramp
C
the ending position of the car
D
the starting position of the car

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