Chemical Reactions Unit Review
Authored by Allison Kurtz
Science
8th Grade
NGSS covered
Used 20+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Finish the sentence with the statement that is always true: in a chemical reaction...
an explosion occurs
a new substance is formed
the state of matter changes
gases are produced
Tags
NGSS.MS-PS1-2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The Law of Conservation of Mass says that mass can neither be __________ or __________.
created; destroyed
recycled; renewed
subtracted; added
joined; separated
Tags
NGSS.MS-PS1-5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Is there ever a time where conservation of mass is NOT observed?
Yes
No
Tags
NGSS.MS-PS1-5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A solid weighing 25 g is mixed with 60 g of a solution. A chemical reaction takes place and a gas is produced. The final mass of the mixture is 75 g. What is the mass of the gas released?
15g
10g
There is no way to measure this.
75g
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2
3
5
6
Tags
NGSS.MS-PS1-5
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Balance this equation:
MgCl2 --> Mg4+ Cl2
Tags
NGSS.MS-PS1-5
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Is the following reaction balanced?
(AQ 1, 2)
Yes
N0
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
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