vion
tent Mastery
forms
Directions: Complete the paragraphs using the words in the list below.
amounts
atoms
chemical reaction
Reactions
A 1.
converted into new substances. A chemical 2.
coefficients
equation
substance
products
reactants
is a change in which one or more substances are
is a way to describe
a chemical reaction using chemical formulas and other symbols. In a chemical
equation, the substances on the left side of the arrow that react are the starting
substances called 3.
The substances on the right side of the
arrow are the substances produced from the reaction, called 4.
The arrow means produces, or 5.
In a chemical equation, the numbers to the left of the formulas for reactants and
products are called 6.
7._
They represent the number of units of each
taking part in a chemical reaction. Knowing the number of
units helps chemists to add the correct 8.
of reactants to a reaction.
of each
A balanced chemical equation has the same number of 9.
element on both sides of the equation.
Directions: Decide if each statement below is true or faise. If false, change the italicized term to make the statement
correct and write your answer in the blank at the left. If the statement is correct, write true in the blank.
10. In a single-displacement reaction, water, a gas, or a
precipitate forms when two ionic compounds in a
solution are combined.
11. An insoluble compound formed during a double-
displacement reaction is called a precipitate.
12. In a single-displacement reaction, one element replaces
another element in a compound.
13. Most chemical reactions can be divided into five main
groups.
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