Question 1

Which of the following best explains why a hot air balloon rises in the atmosphere?

Accepted Answer

The heated air inside the balloon has higher kinetic energy, causing the gas particles to move faster and spread out, making the air less dense than the surrounding cooler air.

Question 2

According to the kinetic molecular theory, which statement about gas particles is INCORRECT?

Accepted Answer

Gas particles experience strong attractive forces between each other.

Question 3

A sample of gas is held at constant temperature. If the volume is decreased from $$1.0\ \mathrm{L} to$$ $$0.5\ \mathrm{L}$$, what happens to the pressure?

Accepted Answer

The pressure doubles.

Question 4

Which of the following is a correct conversion for a pressure of $$450\ \mathrm{kPa} to $$atmospheres (atm)?

Accepted Answer

$$4.44\ \mathrm{atm}$$

Question 5

Which of the following best describes the arrangement and movement of particles in a solid?

Accepted Answer

Particles are close together in a regular pattern and vibrate in place.

Question 6

A pressure gauge reads $$5.3\ \mathrm{atm}. $$What is this pressure in millimeters of mercury (mm Hg)?

Accepted Answer

$$4028\ \mathrm{mm\ Hg}$$

Question 7

Which of the following is NOT a property of crystalline solids?

Accepted Answer

They melt over a range of temperatures.

Question 8

Which of the following best describes an amorphous solid?

Accepted Answer

It has no long-range order and melts over a range of temperatures.

Question 9

A gas is heated in a rigid, sealed container. If the initial temperature is $$300\ \mathrm{K}$$ and the pressure is $$100\ \mathrm{kPa}$$, what will the pressure be if the temperature is increased to $$600\ \mathrm{K}$$?

Accepted Answer

$$200\ \mathrm{kPa}$$

Question 10

Which of the following is a diatomic molecule found in the atmosphere?

Accepted Answer

$$\mathrm{O}_2$$

Question 11

Which of the following statements about gas pressure is TRUE?

Accepted Answer

Gas pressure increases as the number of collisions with the container walls increases.

Question 12

Which of the following is the correct relationship between pressure and volume for a gas at constant temperature?

Accepted Answer

Inversely proportional

Question 13

Which of the following is a property of metallic solids?

Accepted Answer

They conduct electricity and are malleable.

Question 14

A sample of gas at $$1.0\ \mathrm{atm}$$ and $$273\ \mathrm{K} is $$compressed to half its original volume at constant temperature. What is the new pressure?

Accepted Answer

$$2.0\ \mathrm{atm}$$

Question 15

Which of the following is the SI unit of pressure?

Accepted Answer

Pascal (Pa)

Question 16

Which type of solid is diamond an example of?

Accepted Answer

Covalent network solid

Question 17

Which of the following best describes the motion of gas particles as temperature increases?

Accepted Answer

They move faster and collide more frequently with greater force.

Question 18

Which of the following is a property of ionic solids?

Accepted Answer

They are hard and have high melting points.

Question 19

Which of the following is a fluid?

Accepted Answer

Liquid water

Question 20

A pressure at the top of Mount Everest is $$33.7\ \mathrm{kPa}. Is $$this greater or less than $$0.25\ \mathrm{atm}$$?

Accepted Answer

Greater, because $$33.7\ \mathrm{kPa} = 0.333\ \mathrm{atm}$$

States of Matter and Gas Properties: Introductory Chemistry Study Guide

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