Vocab
Which law explains why balance chemical equations?
Law of conservation on mass
A reaction where two things combine to make one compound
Synthesis reaction
Balance the following reaction
_____Mg + _____HCl → _____MgCl2 + _____H2
_____Mg + 2HCl → _____MgCl2 + _____H2
Classify the reaction
____ C + O2 → CO2
Synthesis
What is a subscript?
Small number to the bottom right that tells you how many of each atom are in a compound
A reaction where one reactants breaks apart to make more than one product
Decomposition
Balance the folowing equation:
_____Zn + _____HCl → _____H2 + _____ZnCl2
_____Zn + _____HCl → _____H2 + _____ZnCl2
Classify the reaction
_____C4H10 + O2 → CO2 + H2O
Combustion
What is a coefficient?
The number used to balance equations that is multiplied by the subscript to get the total in the reaction
A reaction where one substance replaces another
Single replacement
Balance the following equation
_____C2H4 + _____O2 → _____CO2 + _____H2O
_____C2H4 + _____O2 → _____CO2 + _____H2O
Classify the reaction
_____KI + Cl2 → KCl + I2
Single Replacement
What are products?
What is produced in chemical reactions. (To the right of the arrow)
A reaction where two substances replace each other
Double replacement
Balance the following equation
_____KMnO4 + _____HCl → _____KCl + _____MnCl2 + _____H2O + _____Cl2
_____KMnO4 + _____HCl → _____KCl + _____MnCl2 + _____H2O + _____Cl2
Classify the reaction
_____FeS + HCl → FeCl2 + H2S
What are reactants?
The starting material of chemical reactions (to the left of the arrow)
A reaction that always begins with a hydrocarbon and oxygen and products Carbon dioxide, light and heat
Combustion
Balance the following equation:
_____K2SO4 + _____BaCl2 → _____KCl + _____BaSO4
_____K2SO4 + _____BaCl2 → _____KCl + _____BaSO4
Classify the reaction
_____ N2O5 → N2 + O2
Decomposition