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Day 3: Phases & Gases

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

#1
Front (Question)

Physical Transition

Back (Answer)

Phase changes

#2
Front (Question)

Chemical Transition

Back (Answer)

Combustion, changes the element

#3
Front (Question)

Solid –> liquid

Back (Answer)

Fusion (endo)

#4
Front (Question)

Liquid –> gas

Back (Answer)

Vaporization (endo)

#5
Front (Question)

Solid –> Gas

Back (Answer)

Sublimation (endo)

#6
Front (Question)

Gas –> Liquid

Back (Answer)

Condensation (exo)

#7
Front (Question)

Liquid –> solid

Back (Answer)

crystalization (exo)

#8
Front (Question)

Gas –> Solid

Back (Answer)

deposition (exo)

#9
Front (Question)

Endothermic reactions

Back (Answer)

Positive entropy positive enthalpy

#10
Front (Question)

Exothermic reactions

Back (Answer)

Negative entropy Negative enthalpy

#11
Front (Question)

At the b.p. the atm equals the

Back (Answer)

vapor pressure

#12
Front (Question)

Triple point

Back (Answer)

solid, liquid & gas meet

#13
Front (Question)

Critical point

Back (Answer)

no more phase changes

#14
Front (Question)

Ideal gas assumptions

Back (Answer)

• Gas molecules themselves have no volume (good @ low pressure) • No inter molecular attractions between molecules (all collisions are ellastic) (Good @ high temperatures)

#15
Front (Question)

Kinetic Energy Average is ∝

Back (Answer)

to Temperature Not all molecules move at the same speed

#16
Front (Question)

STP (standard temperature and pressure)

Back (Answer)

1 atm 0 dregrees celcius = 273 K

#17
Front (Question)

Units for gases

Back (Answer)

l L = 1 cm^3 = 1 mL Kelvin for temperature Pressure: 1 atm = 760 torr = 760 mmHg = 101325 Pa Energy: 8.314 J/mol * K OR 0.08206 Latm/molK n = # mols of gas

#18
Front (Question)

> Mass per volume

Back (Answer)

more dense

#19
Front (Question)

Ideal gas law

Back (Answer)

PV=nRT (works best at low P, high T, and for non-polar gases)

#20
Front (Question)

Boyle’s Law

Back (Answer)

P∝ 1/V

#21
Front (Question)

Charle’s Law

Back (Answer)

V ∝ T, density decreases

#22
Front (Question)

Avogadro’s Law

Back (Answer)

V ∝ n, 6.02 * 10^23 avoardo’s number

#23
Front (Question)

Dalton’s partial pressure

Back (Answer)

Ptot = Pa+Pb.. Pa = XaPtot, Xa= mol fraction

#24
Front (Question)

Grham’s Law of Effusion

Back (Answer)

r1/r2 = √M2/M1 Gases escape through narrow holes Lighter gas fraction moves faster