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Chemistry
Reactions, equilibrium, bonding, and the arithmetic that holds them together.
Chemical equilibrium
what is the difference between Kc and Kp
why doesn't adding a solid change the equilibrium constant
does adding a catalyst shift equilibrium
why does Le Chatelier's principle shift toward products
Acids and bases
why is pH 7 neutral
how does a buffer resist pH change
what is the difference between a strong acid and a weak acid
Stoichiometry
why do you convert to moles before comparing amounts
how to find the limiting reactant
Thermodynamics
when is a reaction spontaneous using Gibbs free energy
why is entropy positive when a solid becomes a gas
Bonding
why is water polar
Thermochemistry
how do you know if a reaction is endothermic or exothermic
Periodic trends
why does atomic radius decrease across a period
Atomic structure
why do electrons fill 4s before 3d
Redox reactions
what does an oxidation number actually mean
Molecular geometry
how to tell if a molecule is polar from its shape
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