Gases Unit Chem

gases ___ their containers

fill

are gases compressible?

yes! (liquids and solids are not)

What is pressure caused by?

the collisions the particles have with the container and eachother

what is 1 torr equal to?

1 mm of Hg

how many mm of Hg is equal to one ATM

760

volume must be measured in ____

Litres

Temperature equals the average ____ _____ of the particles

kinetic energy

are ideal gases collisions elastic? Why or why not?

Yes, there is no net loss of energy

Do Ideal gases have interactive forces? (attraction or repulsion)

No

temperature must be measured in ____

Kelvin

What was Boyle’s law?

pressure and volume are inversely proportional. (K = PV)

what coloured line has the highest temperature?

red

What is Charles’ law?

volume and temperature are directly proportional. (k=V/T)

what is Gay-Lussac’s law?

pressure and temperature are directly proportional. (k = P/T)

what is the combined gas law?

P1V1 / T1 = P2V2 / T2

equal volumes of gases at equal temperature and pressure contain ____ numbers of particles

equal

What is Avogadro’s law?

volume of gas is directly proportional to the number of moles (V = nVm)

Do real gases have a mass?

yes

Gases behave ____ at low pressures and high temperatures

ideally

Gases behave ___ at high pressures and low temperatures

not ideally / real

ideal gases have ____ motion

constant

do real gases obey PV = nRT?

No

What is the ideal gas law?

PV = nRT

What is Dalton’s law?

the total pressure of a mixture of gases is equal to the sum of all of the partial pressures. (Total pressure = P1 + P2 + P3….)

How do you find mole fractions?

n = m/MM

What’s Avogadros formula?

number of particles = number of moles X Avogadros’ constant