Moles
Types of Chemical Reactions
Symbols
Balancing Equations
Counting Atoms
100
1 mole equals 6.022 x 1023. This is known as _______________'s Number.
Avogadro
100
This type of chemical reaction takes this format:
AB + C → AC + B
Single Replacement Reaction.
100
What does this symbol indicate?
(g)
The state of matter of the element or compound is a gas.
100
When you balance a chemical equation, you only adjust this number.
Coefficient or mole
100
How many total atoms in this compound?
H2SO4
7 atoms
200
A mole is also known as the ___________ of an element or compound.
Coefficient
200
This type of chemical reaction takes this format:
AB + CD → AC + BD
Double Replacement Reaction.
200
What does this symbol represent?
(l)
The state of matter of the element or compound is a liquid.
200
What coefficient goes in front of the "HCl" below to balance it?
Zn + ___ HCl → ZnCl2 + H2
2
200
How many total atoms in this compound?
KMnO4
6 atoms
300
What is a mole ratio?
The ratio of moles of one substance (element or compound) to the moles of another substance (element or compound) in a chemical reaction.
300
This type of chemical reaction typically has a hydrocarbon and oxygen as reactants, and carbon dioxide and water as products. The reaction releases a lot of heat energy.
Combustion Reaction.
300
What does this symbol indicate?
Yields, or produces
300
What coefficient goes in front of the "H2" below to balance the equation?
CH4 + H2O → CO + ___ H2
3
300
How many total atoms in this compound?
Ca3(PO4)2
13 atoms
400
What does this mole ratio indicate:
5 moles O2 / 3 moles CO2
There are 5 moles of O2 for every 3 moles of CO2
400
This type of chemical reaction has only one reactant.
Decomposition reaction.
400
What does this symbol indicate?
Reversible Reaction.
400
What coefficient goes in front of the "HCl" below to balance the equation?
CH4 + 4Cl2 → CCl4 + ___HCl
4
400
How many total atoms in this compound?
Mg(C2H3O2)2
15 total atoms
500
What is the mole ratio of C3H8 to H2O in the equation below?
C3H8 (g) + 5O2 (g) → 3CO2 (g) + 4H2O (g)
1 mole of C3H8 to 4 moles of H2O
500
This type of chemical reaction has only one product.
Sythesis or combination reaction.
500
What does this symbol indicate?
(aq)
Aqueous solution. Reactants can dissolve in the solution.
500
What coefficient goes in front of the "Fe," "O2" and the "Fe2O3" below to balance it?
___ Fe + ___O2 → ___ Fe2O3
4, 3, 2
500
How many total atoms in this compound?
(NH4)3PO4
20 atoms