Periodic Table
Reactions
Acid/Base
Bonding
Equilibrium
100
How many valence electrons does silicon (Si) have as an atom?
4
100
What is the reaction type for the following reaction?

NaCl(aq) + AgNO3(aq) --> NaNO3(aq) + AgCl(s)

Double-replacement or precipitation reaction
100
What is the Arrhenius definition of a base?
Gives off OH-
100
What is the ionic compound formula between ions of rubidium (Rb) and sulfur (S)?
Rb2S
100
What 2 states of matter are included in equilibrium equations?
Gases and aqueous
200
How many neutrons does the following isotope have? 199F
10 neutrons
200
Does entropy increase or decrease in the following reaction?

A(g) --> B(s)

Decrease in entropy
200
What is the Bronsted-Lowry definition of a base?
Accepts a proton or hydrogen ion
200
Which of these polar covalent bonds is the most polar?

C-F, N-F, or O-F

C-F
200
According to Le Chatelier's principle which way does the reaction below shift if you increase the concentration of A?

A(g) <--> B(g)

Right, to the product side
300
How many total electrons are in O2-?
10 electrons
300
When the reaction below is balanced, what is the sum of the coefficients?

Al + O2 --> Al2O3

9
300
What is the pH of a solution with a pOH of 9?
5
300
What is the empirical formula of the compound C6H8O4?
C3H4O2
300
According to Le Chatelier's principle which way does the reaction below shift if you decrease the volume?

A(g) <--> 2 B(g)

Left, to the reactants
400
How many valence electrons does the following element have?:

[Rn] 7s2 5f14 6d10 7p2

4 valence electrons
400
What is a spectator ion?
Removed from net ionic equation, don't change in reactions, are aqueous on both sides of a reaction.
400
What is the pH of a solution with a [H+] of 1x10-6 M?
6
400
What is the molecular shape for NH2-
Bent
400
According to Le Chatelier's principle which way does the ENDOTHERMIC reaction below shift if you increase the temperature?

A(g) <--> B(g)

Right, to the products
500
How many unpaired electrons does an atom of oxygen have based on its electron configuration?
2 unpaired electrons
500
What is the limiting reagent if 2 moles of CH4 reacts with 3 moles of O2?

CH4 + 2 O2 --> CO2 + 2 H2O

O2
500
Is a solution with a [OH-] of 1x10-8 M an acid or base?
Acid
500
What type of intermolecular force is found between oxygen molecules? O2---O2
London dispersion forces
500
What is the Keq set-up for the reaction below?

2 Na(s) + Cl2(g) <--> 2 NaCl(s)

Keq = 1/[Cl2]
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