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Chemistry 20 Gas Laws

Total questions: 14

Worksheet time: 28mins

Name
Class
Date
1.

In the video "the diving eyedropper" why did the eyedropper fall to the bottom of the bottle?

a)

A decrease in temperature caused the volume of the gas in the dropper to decrease

b)

An increase in temperature caused the volume of gas in the dropper to decrease

c)

A decrease in pressure caused the volume of gas in the dropper to decrease

d)

An increase in pressure caused the volume of gas in the dropper to decrease

2.

Marshmallows contain tiny air bubbles trapped in a sugary, gooey gooddness! When roasting a marshmallow on a campfire, if you are careful not to burn the marshmallow, you will see it start to swell (grow bigger) as it is cooked. Which law explains this phenomena?

a)

Boyle's Law

b)

Charles' Law

c)

Gay-Lussac's Law

d)

Ideal Gas Law

3.

Which set of variables have an inversely proportional relationship?

a)

Pressure and Volume

b)

Pressure and Temperature

c)

Temperature and Volume

4.

What temperature in Kelvin is equal to - 72 oC?

a)

- 345 K

b)

- 201 K

c)

201 K

d)

345 K

5.

Which is the same measured pressure as 128 mm Hg?

a)

17.1 kPa

b)

960 kPa

c)

0.268 atm

d)

1.26 atm

6.

When a gas is heated from 273 oC to 819 oC:

a)

Its average kinetic energy is tripled (3x greater)

b)

Its average kinetic energy is doubled (2x greater)

c)

Its average kinetic energy does not change

d)

The gas molecules slow down

7.
The following graph shows ____ relationship. 
a)
Direct
b)
Inverse
8.

You have a gas that has a pressure of 2 ATM and a volume of 10 L. What would be the new volume if the pressure was changed to 1 ATM?

a)

5 L

b)

20 L

c)

10 L

d)

1 L

9.
A sample of gas with a volume of 30.0 mL at 25.0oC is heated to 50.0oC.  What is the new volume of the gas?
a)
60.0 mL
b)
15.0 mL
c)
27.5 mL
d)
32.5 mL
10.
A sample of oxygen gas has a volume of 150.0 mL when its pressure is .947 atm. What will the volume of the gas be if it is lowered to a pressure of 0.658 atm and the temperature remains constant?
a)
72 mL
b)
144 mL
c)
216 mL
d)
288 mL
11.

A 2.00 L sample of nitrogen gas at 27° C and 600 mm Hg is heated until it occupies a volume of 5.00 L. If the pressure remains unchanged, the final temperature of the gas is

a)

68 o C

b)

120 o C

c)

477 o C

d)

677 o C

12.

A sample of 0.010 mole of oxygen gas is confined at 127°C and 0.80 atmosphere. What would be the pressure of this sample at 27°C and the same volume?

a)

0.10 atm

b)

0.20 atm

c)

0.60 atm

d)

0.80 atm

13.

A large balloon with a volume of 150 L at 100.0 kPa and 25 oC is released into the air. The balloon is allowed to change size without restrictions. What will be the volume of the balloon in the sky where the temperature is -30 oC and the pressure is 40.0 kPa?

a)

460 L

b)

306 L

c)

313 L

d)

450 L

14.

A capped syringe with a volume of 20.0 mL at a temperature of 15 oC and a pressure of 101 kPa is placed in a hot water bath. The plunger is depressed so the gas occupies a volume of 16.0 mL at a temperature of 70 oC. Predict the new pressure inside the syringe.

a)

106 kPa

b)

116 kPa

c)

125 kPa

d)

150 kPa