gases notes

Question 1

k temp

Answer 1

degrees celsius + 273

Question 2

what is STP

Answer 2

Standard Temperature and Pressure (0 degrees C) and (1 atm)

Question 3

kinetic molecular theory.. gas particles are

Answer 3

• much smaller than the spaces between them
• in a constant, random, motion
• do not attract or repel each other

Question 4

in the kinetic molecular theory… what happens when gas particles collide

Answer 4

kinetic energy is not lost, because the collisions are elastic

Question 5

THE AVERAGE KINETIC ENERGY OF GAS DEPENDS ON

Answer 5

the temperature of the gas

Question 6

what is pressure

Answer 6

a result of collisions between gas particles and the walls of a container

Question 7

units of pressure

Answer 7

mmHg, torr, atm, kPa

Question 8

1.00 atm =

Answer 8

760mmHg, 760 torr, 101.325 kPa

Question 9

Barometer

Answer 9

an instrument that measures gas pressure

Question 10

what does Dalton’s Law of Partial Pressure state

Answer 10

that the total pressure of a gas mixture is equal to the sum of all the gases in the mixture

Question 11

Dalton’s Law of Partial Pressure formula

Answer 11

P total= P1+P2+P3+Pn

Question 12

what is constant in Boyle’s Law

Answer 12

tempertaure

Question 13

boyle’s law states

Answer 13

pressure and volume are inversely proportional

Question 14

boyle’s law formula

Answer 14

P1 x V1 = P2 x V2

Question 15

what is constant in Charle’s law

Answer 15

pressure

Question 16

in charle’s law, temperature is

Answer 16

in Kelvin

Question 17

charle’s law states

Answer 17

volume and temperatuew are directly proportional

Question 18

charles’s law formula

Answer 18

v1 / T1 = v2/ t2

Question 19

Gay-Lussac’s Law what is constant

Answer 19

volume

Question 20

for all laws temp is

Answer 20

kelvin

Question 21

gay-lussac’s law states

Answer 21

pressure and volume are directly proportional

Question 22

gay-lussac’s law formula

Answer 22

P1/T1 = P2/T2

Question 23

as volume increases

Answer 23

pressure decreases

Question 24

as temperature increases

Answer 24

volume and pressure increase

Question 25

combined gas law formula

Answer 25

p1 x v1 / t1 = p2 x v2 /t2

Question 26

what does avogadro’s principle state

Answer 26

an equal volume of different gases contain an equal number of molecules at the same tempertaure and pressure

Question 27

avogadro’s principle formula

Answer 27

v1 / n1 = v2/ n 2

n is number of molecules

Question 28

why was the concept of ideal gas created

Answer 28

to model the behavior of a real gas because real gas is difficult to describe

Question 29

ideal gas is

Answer 29

• useful at low pressures and high temperatures
• do not attract or repel each other
• do not have volume

Question 30

ideal gas law

Answer 30

PV = nRT
or PV= nR x temp
(n is the number of moles)