2. A chemical reaction is the process by the atoms
of one or more substances are rearranged to
form different substances
Reactants and products make up the chemical
reaction
A chemical equation is a statement that uses
chemical formulas to show the identities and
relative amounts of the substances involved in a
chemical reaction
A coefficient in a chemical equation is the
number written in front of a reactant or product
3. Synthesis: a chemical reaction in which two
or more substances react to produce a single
product
Combustion: oxygen combines with a
substance and releases energy in the form of
heat and light
Decomposition: one in which a single
compound breaks down into two or more
elements or new compounds
4. SingleReplacement: a reaction in which the
atoms of one element replace the atoms of
another element in a compound
Double Replacement: the final type of
replacement reaction, which involves an
exchange of ions between two compounds
5. Anaqueous solution contains one or more
substances called solutes dissolved in the
water. Water is the solvent- the most
plentiful substance in the solution.
6. Atoms cannot be created or destroyed
All the atoms we start with we must end up
with
A balanced equation has the same number of
each element on both sides of the equation
7. 1. Write the correct formula for all the
reactants and product
2. Count the number of atoms of each type
appearing on both sides
3. Balance the elements one at a time by
adding coefficients
4. Start with the highest subscript
5. Save hydrogen and oxygen for last
6. Check to make sure it is balanced
8. NEVER change a subscript to balance an
equation!!!!!!!!
NEVER change a formula!!!
NEVER put a coefficient in the middle of a
formula!!!!
