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Physical Science Ch 9
Section B
5
Science
10th Grade
01/03/2012
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Term
chemical equations
 Definition
used by scientists to describe the changes that take place during a reaction
Term
reactants
 Definition
a substance (on the left-hand side of an equation) that undergoes a chemical change
Term
products
 Definition
a substance (on the right-hand side of the equation) that is produced by a chemical change
Term
coefficients
 Definition
a number placed before a formula to balance an equation
Term
Steps for how to write balanced equations
 Definition

Step 1:  Write the word equation for the reaction

 

Step 2:  Write the formula equation for the reaction

 

Step 3:  Balance the formula equation with

coefficients, if necessary
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