Chemical Reactions
Authored by A Bugler
Science
1st - 3rd Grade
NGSS covered
Used 29+ times
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18 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a ___________change, a substance changes into a different substance.
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which factors affect the rate of a reaction?
Temperature
Concentration
Surface Area
Catalyst
All of the Above
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why does a higher concentration increase the rate of reaction?
It increases the amount of reactants
It lowers the activation energy
It increases the energy of particle collisions
It increases the frequency of particle collisions
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why does a higher temperature increase the rate of a reaction?
It increases both the frequency and energy of particle collisions
It only increases the frequency of particle collisions
It only increases the energy of particle collisions
It reduces the activation energy of the reaction
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the rate of reaction?
Tags
NGSS.HS-PS1-5
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Grinding a effervescent tablet into powder increases the rate of reaction due to increased.....
Concentration
Surface Area
Temperature
Reactants
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In an exothermic reaction, heat is ...
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