Gases

Question 1

kinetic molecular theory

Answer 1

five postulates that can derive the ideal gas laws

Question 2

postulate one

Answer 2

particles of a gas are in constant motion and collide with both one another and the container

Question 3

postulate two

Answer 3

the pass is mostly empty sapce

Question 4

postulate three

Answer 4

pressure is exerted when the particles hit the sides of the container

Question 5

postulate four

Answer 5

we assume that the particles do not interact with each other

Question 6

postulate five

Answer 6

-average kinetic energy is proportional to the temperature
-temp higher then particles move faster

Question 7

ideal gas

Answer 7

-an imaginary gas that perfectly fits all the assumptions of the kinetic molecular theory
-High temps=lower pressure

Question 8

why have real gases

Answer 8

bc non-imaginary gases take up some space and have a tiny amount of attraction they are not ideal

Question 8

facts about ideal gases

Answer 8

-the volume is negligible
-no loss of energy between collisions
-no attractive or repulsive forces between gas molecules
-g particles are in constant random motion
-the pressure is caused by collision on the wall
-temp of g particles depends on their kinetic energy

Question 9

things about real gases

Answer 9

-a real gas does not behave correctly according to the kinetic molecular t.
-the deviate more if there is high pressure or low temp

Question 10

pressure

Answer 10

force per unit on an area

Question 11

gas pressure

Answer 11

caused by the collisions between gas particles and the sides of the container

Question 12

things that dont affect pressure

Answer 12

-mass of the particles
-size of the particles

Question 13

things that do affect pressure

Answer 13

-number of particles
-moles

Question 14

pfa thing

Question 16

other units of pressure

Answer 16

torr- same things as mmHg
atm- the exact amount of pressure in the atm at sea level 0C
pa- pascal 1n of force per square meter of area

Question 17

order of pressures

Answer 17

1atm = 760mmHg = 760torr = 101.32kPa

Question 18

formular for farenhiet and celcuis

Answer 18

F=(1.8)C+32

Question 19

formula for kelvin

Answer 19

K=C+273.15

Question 20

kelvin temp scale

Answer 20

-used the principles that gases shrink when they cool
-using that he determined absolute zero where the gas would have no volume (no motion) 273.15

Question 21

Charles law

Answer 21

• he discovered that O,N, H, CO2, and air expand predictably when heated

Question 22

Charles law formula