Ch. 4 Chemical Reactions Test
Authored by G McDonald
Science
7th Grade
NGSS covered
Used 7+ times
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42 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Is this reaction balanced? If not, select the choice that best explains why it is not balanced.
Mg(NO3)2 + 2Na --> 2NaNO3 + Mg
No because Mg is not balanced
No because N is not balanced
No because Na is not balanced
No because O is not balanced
yes
Tags
NGSS.MS-PS1-5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which coefficient must go in the missing spot to balance the chemical equation?
___Cu + O2 --> 2Cu2O
4
1
5
3
Tags
NGSS.MS-PS1-5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of reaction is below?
Cu2O + K --> K2O + Cu
Combination/Synthesis
Decomposition
Double Replacement
Combustion
Single Replacement
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of reaction is below?
H2O --> H2 + O2
Combination/Synthesis
Decomposition
Single Replacement
Double Replacement
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of reaction is below?
Mg(NO3)2 + Na2O --> NaNO3 + MgO
Combination/Synthesis
Single Replacement
Double Replacement
Combustion
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Balance the following reaction: ___Na + ___O2 --> ___Na2O
4Na, 2O2, 3Na2O
2Na, 2O2, 3Na2O
4Na, O2, 2Na2O
1Na, O2, 2Na2O
Tags
NGSS.MS-PS1-5
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In this reaction, how many oxygens are there on each side?
Al(NO3)3 + 3Na --> 3NaNO3 + Al
10
9
7
3
Tags
NGSS.MS-PS1-5
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