AnswersIL-Physical Science A-CRAcids and Bases in Solution

Acids and Bases in Solution — Cumulative exam Answers

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41
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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
42
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Which synthetic and natural polymers can be used to make thread or rope?

A
vulcanized rubber and starch
B
starch and cellulose
C
nylon and cellulose
D
vulcanized rubber and nylon
43

Which statement best explains how the mass of an atom is organized?

A
Most of the mass is contained in the nucleus.
B
The mass is spread evenly throughout the whole atom.
C
The mass is spread evenly throughout the electron cloud.
D
Most of the mass is contained in the electron cloud.
44

The temperature of a solution can change the solubility of a substance. The chart shows the solubility of the same solute at different temperatures in water.

Question illustration
A
W
B
X
C
Y
D
Z
45

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
46

Carlos is making phosphorus trichloride using the equation below. 2P +3Cl2 _PCl3What coefficient of PCl3 would show that the law of the conservation of mass is represented in the chemical equation?

Question illustration
A
4
B
3
C
2
D
1
47

Imagine that Kevin can instantly transport himself between Planet X and Planet Y. Which statement could be said about Kevin in this situation?

A
Kevin’s weight may change between Planet X and Planet Y.
B
Kevin’s volume may change between Planet X and Planet Y.
C
Kevin’s mass may change between Planet X and Planet Y.
D
Kevin’s matter may change between Planet X and Planet Y.
48

Which best describes what happens to the atoms in a chemical reaction?

A
they are rearranged
B
many of them disappear
C
all of them form stronger bonds
D
all of them remain unchanged
49

Four different objects are placed on a number line at 0. The chart describes the motion of each object.Using the information in the chart, the distance and displacement of each object can be determined. Which object has a distance that is three times as great as its displacement?

Question illustration
A
W
B
X
C
Y
D
Z
50

A scientist is examining an unknown solid. Which procedure would most likely help determine a chemical property of the substance?

A
heating it to find the temperature at which it melts
B
exposing it to a flame to see if it catches on fire
C
hitting it with a hammer to determine if it breaks or bends
D
placing it in water to find out whether or not it dissolves

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