Chemistry B

Equations

Mole

Phases of Matter

Stoichiometry

Symbols

S - Solid

L - Liquid

G- Gas

Aq- water solution

Word Equations

Reactants and products

EX: Iron (s) +chlorine (g) -> iron (lll) chloride (s)

Skeletal - FeCl3 (aq) + Na2CO3 (aq) -> NaCl(aq) + Fe2(CO3)3 (s)

Balanced - Fe-2 Cl-6 Na-6 CO3-3 : Fe-2 Cl-6 Na-2 CO3-3

6.02*10^23

Particles

Atoms

Molecules

Formula Unit

Ion

Molar mass - mass of 1 mol of a substance

Kinetic Molecular theory - attempts to explain the properties of gases

Particles are small and separated by empty space

No significant attractive or repulsive forces

Particles are in constant, random motion

Kinetic Energy - KE+ 1/2 mv^2

Temperature

Measure of the average kinetic energy of the particles

At a given temperature, all gases have the same kinetic energy

Pressure

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Collision of gas particles with the walls of their containers

Force per unit area

Air pressure is measured using a barometer

Gas Laws

Boyle's Law

Charles's Law

Gay Lussac's Law

Ideal Gas Law

Mole ratio

1/ molar mass

moles unknown /moles known

molar mass unknown / 1 mole