Parts of a Chemical Equation
In a chemical reaction the substances to the RIGHT of the YIELD sign are called?
Products
A reaction in which two or more substances combine to form a new compound.
Ex: A + B ---> AB
Synthesis
C2H6
C = 2
H = 6
Matter cannot be created or destroyed is...
The Law of Conservation of Mass
Balance this chemical equation:
H2 + NaCl ---> HCl + Na
H2 + 2NaCl ---> 2HCl + 2Na
In a chemical reaction the substances to the LEFT of the YIELD sign are called?
Reactants
A reaction in which one substance breaks down into two or more substances.
Ex: AB ---> A + B
Decomposition
NH3
N = 1
H = 3
A substance made up entirely of one type of atom. Different types of atoms. Found on the periodic table, represented by single or double letters.
Element
Balance this chemical equation:
NH4NO3 ---> N2O + H2O
NH4NO3 ---> N2O + 2H2O
When balancing a chemical equation, these numbers CAN be changed.
Coefficients
A reaction in which a substance reacts with oxygen to release energy.
Ex: Burning
Combustion
2H2O2
H = 4
O = 4
A substance which is formed by two or more different types of elements. Made up of more than one element.
Compound
Is this chemical equation balanced?
2Fe2O3 + 3C ---> 4Fe + 3CO2
YES!
When balancing a chemical equation, these numbers CANNOT be changed.
Subscript
A reaction in which two compounds react to form two new compounds.
Ex: AB + CD ---> CB + AD
Double Replacement
4Al(OH)3
Al = 4
O = 12
H = 12
A substance made up of two or more atoms that are chemically bonded together.
Molecule
Balance this chemical equation:
P4 + O2 → P4O6
P4 + 3O2 → P4O6
What do we call the arrow used in a chemical equation?
Yield
A reaction where one element replaces another element in a compound.
Ex: A + BC ---> AC + B
Single Replacement
4CO2 + 6H2O
C = 4
O = 14
H = 12
This is an example of a __________ ____________.
CaCO3
Chemical Formula
Balance this chemical equation:
NH3 + H2SO4 ---> (NH4)2SO4
2NH3 + H2SO4 ---> (NH4)2SO4