Parts of a Chemical Equation
What are the big numbers in a chemical equation?
Coefficients
What is synthesis?
Two or more elements joining to make a compound
With what do you balance a chemical equation?
Coefficients
Balance this chemical equation
SO3 + H2O → H2SO4
It is already balanced
Aside from O2, what else is required for combustion?
A fuel source
What are the two major parts of a chemical equation? (hint: separated by an arrow)
What is required for combustion to occur?
Oxygen and a fuel source
Balance the chemical equation
Fe + Ag2SO4 → FeSO4 + Ag
Fe + Ag2SO4 → FeSO4 + 2Ag
Balance this chemical equation
PbCl2+H2S → PbS + HCl
PbCl2+H2S → PbS + 2HCl
What does the word synthesis mean?
Creat or build
Identify the reactants and products of this chemical equation:
2C2H6 + O2 → 4CO2 + 6H2O
Reactants: C2H6 and O2
Products: CO2 and H2O
What is happening in this chemical equation?
2Al2O3 → 4Al + 3O
Decomposition
Why do you need to balance chemical equations?
Law of conservation of matter
Balance this chemical equation
P2O5 + H2O → H3PO4
P2O5 + 3H2O → 2H3PO4
What are the types of chemical reactions
Synthesis, decomposition, Single replacement, double displacement and combustion
What is the purpose of a coefficient?
Determine the amount of molecules there is and balance a chemical equation
What are the two types of replacements?
Single replacements and double replacements
Balance the chemical equation
NH3 → N2 + H2
2NH3 → N2 + 3H2
Balance this chemical equation
C4H10 + O2 → CO2 + H2O
2C4H10 + 13O2 → 8CO2 + 10H2O
At least how many elements do you need in a chemical equation for double displacement to happen?
4
What is the purpose of the subscript?
Determine the amount of atoms in a molecule
What is another word for replacement in a chemical equation?
Displacement
Balance the chemical equation
Al + Cu(OH)2 → Al(OH)3 + Cu
2Al + 3Cu(OH)2 → 2Al(OH)3 + 3Cu
Balance this chemical equation
FeCl3 + H2SO4 → Fe2(SO4)3 + HCl
2FeCl3 + 3H2SO4 → Fe2(SO4)3 + 6HCl
What type of chemical reaction is being displayed here?
AgNO3 + NaCl → AgCl + NaNO3
Double displacement