Unit 11: Gases, Kinetics, & Equilibrium Practice Test

Quiz by Stephen Spitler

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54 questions
• Q1

Which of the following correctly describes temperature?

The average kinetic energy of the particles in a substance

$\Delta$H of a substance

How hot or cold a substance is

How much heat a substance has

30s
• Q2

Which of the following correctly describes pressure?

The amount of gas in a container

The temperature of a gas inside a container

The rate that a gas is able to transfer from one container to another

The force of collisions of a gas on its container

30s
• Q3

How do you convert oC to Kelvin?

oC and Kelvin are the same

oC - 273

oC +273

30s
• Q4

Convert 400oC  to Kelvin.

127 K

673 K

400 K

30s
• Q5

What will happen to the size of a balloon if you take it out of the hot sun and place it in the freezer?

The volume/size will remain constant

The volume/size will increase

The volume/size will decrease

30s
• Q6

What will happen to the size of an inflated balloon if you take it out of the freezer and place it in a warm room?

The volume/size will decrease

The volume/size will remain the same

The volume/size will increase

30s
• Q7

Which of the following statements about the Kinetic Molecular Theory (KMT) is false?

Collisions between particles are completely elastic

Gas particles are in constant organized motion

The volume of the particles is negligible compared to the space between them

Particles do not exert attractive forces on one another

30s
• Q8

Which of the following statements about the Kinetic Molecular Theory (KMT) is false?

Collisions between particles are completely elastic

The volume of the particles is equal to the space between them

Particles do not exert attractive forces on one another

Gas particles are in constant random motion

30s
• Q9

Which of the following statements about the Kinetic Molecular Theory (KMT) is false?

Particles exert attractive forces on one another

The volume of the particles is negligible compared to the space between them

Collisions between particles are completely elastic

Gas particles are in constant random motion

30s
• Q10

Which of the following statements about the Kinetic Molecular Theory (KMT) is false?

Particles do not exert attractive forces on one another

The volume of the particles is negligible compared to the space between them

Collisions between particles are completely inelastic

Gas particles are in constant random motion

30s
• Q11

Why should you put air in your tires in the wintertime?

The cold temperatures cause the tire pressure to increase

The cold temperatures cause the volume of the tires to decrease

The cold temperatures cause there to be less molecules of air in the tires

The cold temperatures cause the tire pressure to decrease

30s
• Q12

Which of the following correctly describes the relationship between temperature and average kinetic energy of gas particles?

As the temperature of a gas increases, the average kinetic energy of the gas particles also increases

As the temperature of a gas increases, the average kinetic energy of the gas particles remains constant

As the temperature of a gas increases, the average kinetic energy of the gas particles decreases

30s
• Q13

I have two tires of equal volume, a blue tire with 500 moles of nitrogen gas inside, and a red tire with 375 moles of nitrogen gas inside. Which tire has a greater pressure?

The red tire

The blue tire

They have the same pressure since their volume is the same

30s
• Q14

Why does a small (40 kg) person walking on stilts (long thin sticks) sink into the snow more quickly than a large (90 kg)  person wearing snowshoes?

The person wearing snowshoes exerts less pressure on the snow because the surface area of the snowshoe is larger than the area of the wooden stilt.

Since the person with snowshoes has more mass (90 kg), they will exert more pressure on the snow

The force is the same but the person wearing stilts has a greater surface area, as a result, they will exert less pressure on the snow

The person with the snowshoes has more gravity acting on them since they have a larger mass, and as a result, the pressure they exert on the snow is less powerful

30s
• Q15

How many moles of fluorine gas were released in the chemistry lab if the pressure was 2.43 atm and the volume was 1.5 L at 298 K?

89.18 mol

1086.21 mol

0.149 mol

0.001 mol

30s

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