Unit 12 Test

Question 1

what is the kinetic molecular theory

Answer 1

it explains the behavior of gases. it offers an explanation of some of the properties of gases

Question 2

according to the kinetic molecular theory…

Answer 2

all matter consists of tiny particles that are in constant motions, particles in a gas are considered to be small round spheres with an insignificant volume, the motion of gas particles is rapid, constant, and random, and all collisions between gas particles are perfectly elastic

Question 3

what is the equation for gas pressure

Answer 3

pressure = force/area

Question 4

gas particles travel in what type of lines

Answer 4

straight lines

Question 5

what is gas pressure the result of

Answer 5

billions of rapidly moving gas particles colliding with an object

Question 6

what is atmospheric pressure

Answer 6

the pressure created by the earth’s gravitational pull on the gases in our atmosphere

Question 7

what is a barometer

Answer 7

a device that is used to measure atmospheric pressure

Question 8

whats the SI unit of pressure

Answer 8

pascal (Pa)

Question 9

what is one standar atmosphere (atm)

Answer 9

the atmospheric pressure at sea level

Question 10

what is dalton’s law of partial pressures

Answer 10

it states that the total pressure of a mixture of gases is the sum of the pressures of each of the individual gases

Question 11

what is dalton’s law of partial pressures equation

Answer 11

Ptotal = P1 + P2 + P3……

Question 12

what are the four big variables of a gas sample

Answer 12

pressure, volume, temperature, and amount

Question 13

what is the unit for Pressure (P)

Answer 13

atm, mmHg, kPa….

Question 14

what is the unit for Amount (n)

Answer 14

moles

Question 15

what is the unit for temperature (T)

Answer 15

Kelvin (K)

Question 16

what do you add to celcius to make it kelvin

Answer 16

273

Question 17

what is the relationship between pressure and volume

Answer 17

p1 + v1 = p2 + v2; inverse relationship

Question 18

what is an inverse relationship

Answer 18

as one goes up the other goes down

Question 19

what is the relationship between volume and temperature

Answer 19

v1 / t1 = v2 /t2; direct relationship; NEVER REACH 0

Question 20

what is a direct relationship

Answer 20

when one goes up the other goes up; TEMP CAN GO TO 0, VOLUME CANT

Question 21

what is the relationship between pressure and temperature

Answer 21

p1 / t1= p2 / t2; direct relationship; BOTH CAN REACH 0

Question 22

what is the combined gas law

Answer 22

allows us to use the three simple laws by eliminating the variable that is held constant; p1v1 / t1 = p2v2 / t2

Question 23

what is gay lussacs law

Answer 23

the relationship between pressure and temperature

Question 24

what is charles law

Answer 24

relationship between volume and temperature

Question 25

what is boyles law

Answer 25

relationship between pressure and volume

Question 26

what is avogadro's law

Answer 26

the relationship between volume and amount of gas

Question 27

what is the equation for the relationship between volume and amount of gas

Answer 27

v1 / n1 = v2 / n2; direct relationship

Question 28

ideal gas law equation

Answer 28

PV=nRt

Question 29

variable for pressure

Answer 29

p

Question 30

variable for volume

Answer 30

v

Question 31

variable for number of moles of gas

Answer 31

n

Question 32

variable for universal gas constant

Answer 32

r

Question 33

variable for temperature

Answer 33

t

Question 34

what is the universal gas constant

Answer 34

the relationship between the four variables by assuming an ideal gas

Question 35

equation(s) for ideal gas law problems

Answer 35

R = 8.313 kPa * L / mol * K 0.0821 atm * L / mol * K