Question 1

Which of the following best describes the physical property of gases that distinguishes them from solids and liquids?

Accepted Answer

Gases expand to fill the entire volume of their container.

Question 2

Pressure is defined as:

Accepted Answer

The force exerted per unit area.

Question 3

Which of the following is NOT a common unit of pressure?

Accepted Answer

joule

Question 4

A patient’s blood pressure is measured at 120 mm Hg. What is this pressure in atmospheres ($$1 	ext{ atm} = 760 	ext{ mm Hg}$$)?

Accepted Answer

$$0.158 	ext{ atm}$$

Question 5

Which variable, when increased while keeping others constant, will cause the pressure of a gas to increase according to the kinetic molecular theory?

Accepted Answer

Temperature

Question 6

Convert a pressure of $$2.5 	ext{ atm} to $$torr. ($$1 	ext{ atm} = 760 	ext{ torr})$$

Accepted Answer

$$1900 	ext{ torr}$$

Question 7

A gas sample is contained in a rigid vessel at constant volume. If the temperature is doubled, what happens to the pressure?

Accepted Answer

Pressure doubles.

Question 8

Which of the following statements about atmospheric pressure is correct?

Accepted Answer

Atmospheric pressure is the force exerted by the weight of air above a surface.

Question 9

A tire gauge reads 35 psi. Convert this pressure to atm. ($$1 	ext{ atm} = 14.7 	ext{ psi})$$

Accepted Answer

$$2.38 	ext{ atm}$$

Question 10

Which of the following would NOT increase the pressure of a gas in a closed container?

Accepted Answer

Removing some gas molecules.

Question 11

A weather report states the atmospheric pressure is 760 mm Hg. What is this pressure in torr?

Accepted Answer

$$760 	ext{ torr}$$

Question 12

Which of the following best explains why gases are compressible?

Accepted Answer

Gas particles are far apart compared to their size.

Question 13

A laboratory experiment requires a pressure of 500 torr. What is this pressure in mm Hg?

Accepted Answer

$$500 	ext{ mm Hg}$$

Question 14

If the number of gas molecules in a container is doubled while temperature and volume remain constant, what happens to the pressure?

Accepted Answer

Pressure doubles.

Question 15

Which of the following is the correct relationship for pressure ($$P$$), force ($$F$$), and area ($$A$$)?

Accepted Answer

$$P = \frac{F}{A}$$

Question 16

A scuba diver descends to a depth where the pressure is 2.5 atm. What is this pressure in mm Hg? ($$1 	ext{ atm} = 760 	ext{ mm Hg})$$

Accepted Answer

$$1900 	ext{ mm Hg}$$

Question 17

Which of the following variables does NOT directly affect the pressure of a gas in a closed container?

Accepted Answer

Color of the container

Question 18

A hospital oxygen tank is filled to a pressure of 1500 psi. What is this pressure in atm? ($$1 	ext{ atm} = 14.7 	ext{ psi})$$

Accepted Answer

$$102 	ext{ atm}$$

Question 19

Which of the following is a real-life example of pressure affecting a physical process?

Accepted Answer

Water boiling at a lower temperature at high altitude due to decreased atmospheric pressure.

Question 20

A gas sample exerts a pressure of 1.2 atm. What is this pressure in mm Hg? ($$1 	ext{ atm} = 760 	ext{ mm Hg})$$

Accepted Answer

$$912 	ext{ mm Hg}$$

Properties of Gases and Pressure: Study Notes

Guida di studio - Domande di pratica