Types of Reactions
CH4+2O2→CO2+2H2O
Combustion
Number in front of the formula
Coefficient
Heat is released, indicating a gas is being produced
Temperature Change
H2+O2→H2O
2H2+O2→2H2O
This element has the symbol Na
Sodium
2H2O2→2H2O+O2
Decomposition
Small number inside the formula
H₂
Subscript
Bubbles form, indicating this is being produced
Gas
Fe+O2→Fe2O3
4Fe+3O2→2Fe2O3
What is the chemical symbol for Zinc
Zn
Zn+2HCl→ZnCl2+H2
Single Replacement
In this formula there are 6 atoms of this element
Ca(NO3)2
Oxygen
This can be viewed being emitted during the reaction (Such as burning)
Light
Al+O2→Al2O3
4Al+3O2→2Al2O3
What is the chemical formula for Hydrochloric Acid
HCL
2H2+O2→2H2O
Synthesis
How many Oxygen atoms are there in the reactants below
2CO2 + 3H2O
7 Atoms
The substances can change what during a reaction to show a reaction has taken place
Color
CaO+CO2→CaCO3
BALANCED
What is the chemical formula for Ammonium Chloride
NH₄Cl
AgNO3+NaCl→AgCl+NaNO3
Double Replacement
Identify the products of the chemical reaction below:
CH4+2O2→CO2+2H2O
Carbon Dioxide CO2
Water H2O
A solid forms when two liquids are mixed
Precipitate Formation
Ca+H2O→Ca(OH)2+H2
Ca+2H2O→Ca(OH)2+H2
SO2 is the formula for what compound
Sulfur Dioxide