Chemical Reactions
Presentation
•
Science
•
10th Grade
•
Practice Problem
•
Easy
+1
Standards-aligned
John III
Used 7+ times
FREE Resource
12 Slides • 10 Questions
1
2
Multiple Choice
Why is it important to understand chemical reactions in everyday life?
Because they only occur in laboratories
Because they help explain natural and industrial processes
Because they are dangerous and should be avoided
Because they are rare events
3
4
5
Multiple Choice
Which part of a chemical equation represents the reactants?
The left side of the arrow
The right side of the arrow
The coefficients
The subscripts
6
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8
Multiple Choice
Which of the following best describes a decomposition reaction?
A chemical change in which a single compound breaks down into two or more simpler products
A chemical change in which one element replaces another in a compound
A chemical change involving the exchange of ions between two compounds
A chemical change in which a compound reacts with oxygen
9
10
11
Multiple Select
Which of the following statements about double-replacement reactions is/are correct?
They involve the exchange of positive ions between two compounds
Both products must be aqueous
They usually produce a precipitate, gas, or molecular compound
Both reactants must be elements
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13
Fill in the Blanks
Combustion reactions almost always involve a hydrocarbon and
14
Multiple Choice
15
Multiple Choice
16
Multiple Choice
3KOH + H3PO4 --> K3PO4 + 3H2O
Combination
Decomposition
Single replacement
Double replacement
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19
Multiple Choice
According to the rules for balancing chemical equations, what should you do if you have an odd number of atoms on one side of the equation?
Add more reactants
Double all coefficients
Remove products
Change the subscripts
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22
Fill in the Blanks
Indicate the respective coefficients needed to balance the chemical equation.
SiCl4(s) + H2O(l) → H4SiO4(s) + HCl(l)
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