Pressure — Quiz Answers

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1
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An empty plastic bottle is sealed in a cool room and then moved to a very hot room. What can best be stated about the air pressure inside the bottle when the bottle reaches room temperature?

A
It is the same as the pressure on the outside of the bottle.
B
It is higher than the pressure on the outside of the bottle.
C
It exerts twice the force per unit area as the air pressure outside the bottle.
D
It is lower than the pressure on the outside of the bottle.
2
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Why does a plastic bottle that is sealed at a high altitude change its shape when it is taken to a low altitude?

A
The number of gas molecules that strike the outside of the bottle decreases as altitude decreases.
B
The bonds between the molecules of the plastic bottle become stronger as the altitude decreases.
C
The number of gas molecules that strike the outside of the bottle increases as altitude decreases.
D
The bonds between the molecules of the plastic bottle become weaker as the altitude decreases.
4

Which corresponds to a pressure of 1 point 2 3 atm ?

A
935 mmHg
B
9 point 2 3 mmHg
C
125 mmHg
D
8 point 7 3 mmHg
7

Which unit is commonly used for measuring pressure?

A
the fraction with numerator cap n and denominator m cubed
B
m cubed
C
Celsius
D
bar
8

Which conditions are equal to STP?

A
25 times degree C , 101 point 3 2 5 kPa
B
negative 273 point 1 5 times degree C , 1 atm
C
0 times degree C , 760 mmHg
D
30 times degree C , 100 kPa
10

Which sequence describes the result of increasing the number of gas particles in a container?

A
more collisions rightarrow lower collision force rightarrow lower pressure
B
fewer collisions rightarrow greater collision force rightarrow higher pressure
C
more collisions rightarrow greater collision force rightarrow higher pressure
D
fewer collisions rightarrow lower collision force rightarrow lower pressure

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