5.1-5.2

Question 1

a gas is greatly affected by both _____ and _____ changes

Answer 1

pressure and temperature

Question 2

says that gas molecules are in constant, rapid motion moving in straight lines until they collide with each other or with a solid or liquid

Answer 2

kinetic theory of matter

Question 3

gas molecules undergo these reactions, where no energy is lost when they collide

Answer 3

elastic collisions

Question 4

true or false: kinetic energy of gas molecules is directly related to temperature

Answer 4

true

Question 5

true or false: gas molecules are very far apart and are negligible in volume compared to the volume of the gas

Answer 5

true

Question 6

gas that obeys exactly the assumptions of the kinetic theory

Answer 6

ideal gas

Question 7

are there ideal gases?

Answer 7

no; none exist

Question 8

kinetic energy formula

Answer 8

Ek = ½mv^2

Question 9

pressure formula

Answer 9

P = F/A

Question 10

SI unit for pressure

Answer 10

Pascal (Pa) (equal to N/m^2)

Question 11

measurable properties that may be varied

Answer 11

variables

Question 12

in this proportion, a change in one variable requires a similar change in the other variable

Answer 12

direct proportion

Question 13

in this proportion, a change in one variable requires an inverse or reciprocal change in the other variable

Answer 13

inverse proportion

Question 14

direct proportion

Answer 14

k = x/y

Question 15

inverse proportion

Answer 15

k = xy

Question 16

device used to measure the pressure exerted by the collisions of gas molecules in our atmosphere

Answer 16

barometer

Question 17

measures pressure using a long glass tube filled with mercury

Answer 17

mercury barometer

Question 18

created the mercury barometer

Answer 18

Evangeliste Torricelli

Question 19

barometer without liquid

Answer 19

aneroid barometer

Question 20

laboratory device used to measure the pressure of gas samples by comparing the heights of two mercury columns

Answer 20

manometer

Question 21

two types of manometer

Answer 21

open-end manometer and closed- end manometer

Question 22

law stating that at constant temperature, the volume of a given amount of gas varies inversely with pressure

Answer 22

Boyle’s law

Question 23

Boyle’s law

Answer 23

P1V1 = P2V2

Question 24

law stating that at constant pressure, the volume of a given amount of gas varies directly with absolute temperature

Answer 24

Charles’s law

Question 25

Charles's law

Answer 25

V1/T1 = V2/T2

Question 26

when working with gases, the temperature in Charles's law must be in ______

Answer 26

Kelvin

Question 27

true or false: Charles's law applies only to gases

Answer 27

true

Question 28

the combined gas law

Answer 28

P1V1/T1 = P2V2/T2