Worksheet: Balancing Equations Name __________________
CHEMISTRY: A Study of Matter © 2004, GPB
6.23
I. Fill in the blanks with the most appropriate term:
A ________________ ________________ tells the story of a chemical
reaction. ________________ are the starting substances in the reaction
while ________________ are the new substances that are formed. The
large numbers in front of some of the formulas are called
________________. These numbers are used to ________________ the
equation because chemical reactions must obey the Law of
________________ of Matter. The number of atoms of each element on
both sides of the equation must be ________________ because matter
cannot be ________________ or ________________. When balancing
equations, the only numbers that can be changed are ________________;
remember that ________________ must never be changed in order to
balance an equation.
Answers
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