
Reactions
Quiz
•
Science
•
9th - 12th Grade
•
Hard
Monte Morton
Used 2+ times
FREE Resource
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20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why must chemical reactions be balanced?
For every action there is an equal and opposite reaction
Matter cannot be created nor destroyed
Reactants must release energy to the environment
a. Compounds can be shown to dissolve in solution
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a chemical reaction there are 2Sr3(PO4)2, how many oxygen atoms are present?
Two Oxygen atoms
Four Oxygen atoms
Eight Oxygen atoms
Sixteen Oxygen atoms
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
This is an unbalanced chemical reaction: C6H12O6 + O2 --> CO2 + H2O Which choice below shows this reaction as balanced?
C6H12O6 + 6O2 --> 6CO2 + 6H2O
C6H12O6 + O2 --> CO2 + 3H2O
C6H12O6 + 4O2 --> 2CO2 + H2O
C6H12O6 + 3O2 --> 2CO2 + H2O
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
This is an unbalanced chemical reaction: H2 + N2 --> NH3 Which choice below shows this reaction as balanced?
H2 + 2N2 --> 2NH3
3H2 + N2 --> 2NH3
4H2 + 4N2 --> NH3
H2 + 4N2 --> NH3
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
This is an unbalanced chemical reaction: Cl2 + NaBr --> NaCl + Br2 Which choice below shows this reaction as balanced?
Cl2 + 4NaBr --> NaCl + 2Br2
2Cl2 +NaBr --> 2NaCl + Br2
Cl2 + 2NaBr --> 2NaCl + Br2
Cl2 + 2NaBr --> 6NaCl + Br2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which is NOT true when balancing a reaction?
Subscripts can be changed within a chemical formula
Coefficients can be changed in front of a chemical formula
The number of atoms in the reactants and products must be equal
The type of atoms in the reacts and products must be the same
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of chemical reaction is this reaction? Na2O + CO2 --> Na2CO3
Single replacement
Double replacement
Synthesis reaction
Decomposition reaction
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