Law of Conservation of Mass Review

Quiz
•
Science
•
7th Grade
•
Hard
Standards-aligned
Lisa Thompson
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
After the reaction, how many grams will Time 2 Setup equal?
30 g
275 g
300 g
305 g
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
This chemical equation represents what happens when a nail rusts: 4Fe + 3O2 –› 2Fe2O3. The total mass after the reaction is
not considered before the reaction.
5 times less than before the reaction.
exactly the same as before the reaction.
about twice as much as before the reaction.
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Anthony is performing an experiment. He adds 0.25 grams of baking soda to 5 grams of water and stirs. Anthony watches as the baking soda dissolves in the water. If Anthony weighs the water and baking soda solution, what will its mass be?
4.75 grams
5.0 grams
5.25 grams
7.5 grams
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A student notices that an inflated balloon gets larger when it is warmed by a lamp. Which best describes the mass of the balloon as a result of this change?
The mass of the balloon increases because the size of the balloon has increased.
The mass of the balloon increases because the temperature of the balloon has increased.
The mass of the balloon stays the same because the gas inside the balloon still has the same mass after it warms up.
The mass of the balloon stays the same because warming decreases the mass enough to cancel out the effect of increasing the size.
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Is this equation balanced?
yes
no
Not enough information
Tags
NGSS.MS-PS1-5
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which picture below would correctly demonstrate the Law of Conservation of Matter if this picture is the reactants?
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following models best demonstrates a balanced chemical equation?
F
G
H
J
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
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