Modules 15 & 16

Memory Lane

100

An atom’s atomic number tells us how many of these it contains

What are protons?

200

** Daily Double!**

This consists of an atom’s symbol surrounded by dots

What are Lewis Structures?

300

All forms of matter  try to stay in this energy state

What is their lowest possible?

400

The electrons that exist farthest from an atom’s nucleus. They are the electrons with the highest energy level number

What are valence electrons?

500

Relating the quantities of different substances in a chemical equation

What is stoichiometry?

The Math Ain't Mathin'

100

The oxidation number of an element by itself, for example, Fe

What is zero?

200

Group 1A metals always have this oxidation number in molecules that contain more than 1 type of atom

What is +1?

300

Fluorine always has a -1 oxidation number in molecules with this

What is contain more than 1 type of atom?

400

For every one unit change of pH, there is a ________ change in the acidity of the solution

What is tenfold?

500

The oxidation number of Br in HBrO₃

Since H: 1, O: 3 x (-2)= -6 totals -5 therefore, Br = +5

Balancing Act

100

When the forward and reverse reactions are proceeding at the same rate

What is equilibrium?

200

These 3 circumstances are considered a stress to an equilibrium

What are change in concentration, pressure, or temperature?

300

** Daily Double!!**

These 2 things are not considered a source of stress to the equilibrium

What are states of solid or liquid?

400

LEO says GER is a mnemonic to help keep these 2 definitions straight

What are Lose Electrons Oxidation and Gain Electrons Reduction 

500

When a redox reaction occurs, there will always be at least 1 atom that is __________ and at least 1 atom that is __________

What is oxidized and reduced? (p. 568)

It's So Formulaic

100

The K represents this in the following equation:

K = [C]^c_eq [D]^d_eq

       [A]^a_eq [B]^b_eq

What is the equilibrium constant?

200

This will happen to the concentration of F₂ if the temperature is raised in this reaction that has reached equilibrium:

H₂ (g) + F₂ (g) <--> 2 HF (g)     

∆H^o = - 273 kJ

What is the concentration will increase?

300

The Ka represents this in the following equation:

K_a = [H+]^b_eq  [A-]^c_eq

             [HA]^a_eq

What is acid ionization constant?

400

When a stress is applied to an equilibrium, the reaction will shift in a way that relieves the stress and restores equilibrium

What is Le Châtelier’s Principle?

500

This happens if the number of gas molecules is the same on both sides and also if there are no gases in the equation

What is nothing will happen?