Quiz - Law of Conservation of Mass
Authored by TODD LEWIS HUTNER
Science
9th - 12th Grade
TX covered
Used 6+ times
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10 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Which of the compounds is a reactant in the following reaction:
2NaOH + H2SO4 → Na2SO4 + 2H2O
NaOH
Na2SO4
H2SO4
H2O
SO4
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
2.
OPEN ENDED QUESTION
3 mins • 1 pt
In your own words, what is the law of conservation of mass?
Evaluate responses using AI:
OFF
Tags
TX.112.43.C.9.A.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A student has two different liquids in open jars, shown in the image to the left. She pours the liquid from one jar into the other jar, and she observes bubbles. After the bubbling stops, she finds that the total mass of the liquids is now less than the total mass of the liquids before they were mixed together.
How can her observation be explained?
Some atoms went into the air.
Some atoms were destroyed.
Some atoms became heavier.
Some atoms became lighter.
Tags
TX.112.43.C.9.A.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The diagram to the left shows compounds before they react in a chemical reaction. Atoms are represented by circles, and compounds are represented by circles that are connected to each other. The different colored circles represent different kinds of atoms.
Which of the following diagrams could represent the compounds that result from the chemical reaction and why?
Tags
TX.112.43.C.9.A.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many atoms of Oxygen (O) are in the following Compound?
P2O5
2
3
5
7
10
Tags
TX.112.43.C.9.A.
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Which of the following compounds are the products in the following reaction:
Pb(NO3)2 + 2KI → PbI2 + 2KNO3
Pb(NO3)2
PbI2
KI
KNO3
NO3
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many atoms of Oxygen (O) are in the following compound:
4Fe2O3
2
3
4
8
12
Tags
TX.112.43.C.9.A.
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