Chemical Reactions
Authored by Scott Beiter
Chemistry
6th - 9th Grade
NGSS covered
Used 31+ times
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18 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following models best demonstrates a balanced chemical equation?
Tags
NGSS.MS-PS1-5
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Which of the following equations demonstrates an actual chemical reaction that forms a new substance?
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Two clear colorless solutions were combined.
The student observed that the temperature changed from 25 •C to 23 •C when the solutions were combined and that a white substance rapidly formed and settled to the bottom of the container. What most likely happened to produce these results?
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-4
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In which of these compounds are there twice as many oxygen atoms as hydrogen atoms?
Tags
NGSS.MS-PS1-1
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
In a ___________change, a substance changes into a different substance.
Physical
Chemical
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The Law of Conservation of Mass states
that matter exists in all states and reacts the same
that matter can only be changed into new substances by introducing a catalyst
that matter exists in the same state throughout any chemical change
that matter cannot be created or destroyed and that the mass of the products must equal the mass of the reactants
Tags
NGSS.MS-PS1-5
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
a copper penny turning greenish after a few years.
Physical change
Chemical change
Tags
NGSS.MS-PS1-2
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