Law of Conservation of Mass
Authored by Emily Massia
Chemistry
10th Grade
NGSS covered
Used 1+ times
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16 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following best describes the law of conservation of mass?
Mass can be created or destroyed in a chemical reaction.
Mass is neither created nor destroyed in a chemical reaction.
Mass is always increased in a chemical reaction.
Mass is always decreased in a chemical reaction.
Tags
NGSS.MS-PS1-5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
18 grams
36 grams
36 grams
36 grams
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The mass of sodium and chlorine before the reaction is equal to the mass of sodium chloride after the reaction.
The mass of sodium chloride is less than the mass of sodium and chlorine.
The mass of sodium chloride is more than the mass of sodium and chlorine.
The mass of sodium is equal to the mass of chlorine.
Tags
NGSS.MS-PS1-5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is an example of the law of conservation of mass?
Burning wood results in ash and smoke, with the total mass being less than the original wood.
Dissolving sugar in water results in a solution with the same mass as the sugar and water combined.
Melting ice results in water with less mass than the original ice.
Evaporating water results in vapor with more mass than the original water.
Tags
NGSS.MS-PS1-5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
44 grams
24 grams
32 grams
12 grams
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a closed system, 10 grams of hydrogen react with 80 grams of oxygen to form water. What is the total mass of water formed?
70 grams
90 grams
100 grams
80 grams
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A chemical reaction in a closed container starts with 50 grams of reactants. After the reaction, the products weigh 48 grams. What can be inferred?
The law of conservation of mass is violated.
There was a measurement error or gas was released.
The products are heavier than the reactants.
The reactants were not completely used.
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
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