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Types of Reactions
Balancing Reactions
Stoichiometry
Molar Mass
Vocabulary
100
What type of reaction is this, Ca + N2 --> Ca3N2?
Synthesis Reaction
100
Balance the following: ___ KClO
3
--> ___ KCl + ___ O
2
2KClO
3
--> 2KCl + 3O
2
100
Using 2KClO
3
--> 2KCl + 3O
2
, what is the stoichiometric ratio (#:#) between KClO3 and KCl?
It is 1:1.
100
What is the unit for molar mass?
gram per mole (g/mol)
100
This is what you start with in a chemical reaction. It is usually on the left side of a chemical equation.
What is a reagent?
200
What type of reaction is this, H2 + N2 --> NH3
synthesis reaction
200
Balance the following: ___ FeO + ___ H
2
O --> ___ Fe(OH)
2
_1_ FeO + _1_ H
2
O --> _1__ Fe(OH)
2
200
Using 2KClO
3
--> 2KCl + 3O
2
, what is the stoichiometric ratio between KClO
3
and O
2
?
It is 2:3.
200
What is the molar mass of molecular oxygen?
31.998 g/mol
200
When balancing a chemical equation, this is the part of the equation that you can change.
What is the coefficients?
300
Give a generic example of a decomposition reaction.
AB --> A + B
300
Balance this equation: ___ NHO
2
--> ____ N
2
O
3
+ ____ H
2
O
_2_ NHO
2
--> _1_ N
2
O
3
+ _1_ H
2
O
300
Using 2KClO
3
--> 2KCl + 3O
2
, if you have 20 moles of KClO
3
and how many moles of O
2
could you make?
You would make 30 moles of O
2
.
300
What is the molar mass of water?
18.0148 g/mol
300
This is the average mass of an element. It can be found on the periodic table.
What is the atomic mass?
400
Give a generic example of a synthesis reaction.
A + B --> AB
400
Balance this reaction: ___ C
7
H
6
O
3
+ ___ O
2
--> ___ H
2
O + ____ CO
2
_1_ C
7
H
6
O
3
+ _7_ O
2
--> _3_ H
2
O + _7_ CO
2
400
Using 2KClO
3
--> 2KCl + 3O
2
, if you have 90 moles of KClO
3
and how many moles of O
2
could you make?
There would be 135 moles of O
2
.
400
What is the molar mass of sodium carbonate?
105.998 g/mol
400
A unit of measurement for chemists for determining how many atoms are present in a substance. There are 6.022 x 10
23
units inside it.
What is a mole?
500
Give a generic example of a combustion reaction.
Fuel + O2 --> CO2 + H2O
500
Balance this reaction: ___ C
12
H
22
O
11
+ ___ O
2
--> ___ H
2
O + ___ CO
2
_1_ C
12
H
22
O
11
+ _12_ O
2
--> _11_ H
2
O + _12_ CO
2
500
Using 2KClO
3
--> 2KCl + 3O
2
, if you have 90 moles of O
2
and how many moles of KClO
3
could you make?
60 moles of KClO
3
.
500
What is the molar mass of aluminum bromide?
266.694 g/mol
500
This is the law that says that matter cannot be created or destroyed only transferred or rearranged.
What is the law of conservation of mass?