Endothermic and Exothermic Chemical Reactions and Rate of Reactions

Quiz
•
Science
•
8th Grade
•
Hard
+2
Standards-aligned
Lisa Thompson
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In an exothermic reaction, where is thermal energy located in the chemical equation?
On the reactants' side
On the products' side
In the middle of the equation
It does not appear in the equation
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What happens to energy during an endothermic reaction?
It is released to the surroundings
It is absorbed from the surroundings
It is conserved within the products
It remains unchanged
Tags
NGSS.HS-PS1-4
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In a cold pack, what happens to energy during the chemical reaction?
It is released to the surroundings
It is absorbed from the surroundings
It is created by the reaction
It is destroyed by the reaction
Tags
NGSS.HS-PS1-4
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In an exothermic reaction, why is thermal energy released?
The reactants have higher energy than the products
The products require more energy to form
Energy is stored in the reactants only
The reaction occurs at a very high temperature
Tags
NGSS.HS-PS1-4
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Temperature changes are noticeable in some reactions but not others because:
Some reactions are exothermic or endothermic.
All reactions release the same amount of energy.
Temperature is not a factor in chemical reactions.
Reactions occur at the same rate.
Tags
NGSS.HS-PS1-4
NGSS.HS-PS1-5
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which statement about chemical reactions and temperature is correct?
Only exothermic reactions affect temperature
The type and amount of energy involved varies by reaction
Endothermic reactions do not release any energy
Chemical reactions do not change temperature.
Tags
NGSS.HS-PS1-4
NGSS.HS-PS1-5
NGSS.HS-PS3-4
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What factor increases the reaction rate by causing more frequent collisions between particles?
Decreased concentration
Increased concentration
Lower pressure
Smaller surface area
Tags
NGSS.HS-PS1-5
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