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Worksheetsexo and endothermic reaction quiz
Total questions: 15
Worksheet time: 15mins
Name
Class
Date
1.
What type of reaction occurs during the elephant toothpaste experiment?
a)
Exothermic
b)
Endothermic
c)
mechanical
d)
circulatory
2.
If they energy required to break the bonds is less than the energy given out by making new bonds the reaction is
a)
Exothermic
b)
Endothermic
c)
Neutralisation
d)
baloney
3.
Do the reactants in an exothermic reaction have a higher or lower energy than the products?
a)
Higher
b)
Lower
c)
Equal to
d)
eggs
4.
In an endothermic reaction, heat is ,,,
a)
taken in
b)
given out
5.
In an exothermic reaction, heat is ...
a)
taken in
b)
given out
6.
Is photosynthesis an exothermic or endothermic reaction?
a)
Endothermic
b)
Exothermic
c)
Neither
7.
Alka-seltzer in water is an example of a
a)
Endothermic reaction
b)
Exothermic reaction
c)
Dissolving a salt
d)
physical change
8.
A student mixed two chemicals to allow them to react. The temperature before the reaction was 25 ° C. The temperature after the reaction was 18° C. Which of the following is true?
a)
The temperature changed
b)
It is an endothermic reaction
c)
It is an exothermic reaction
d)
Two of the answers are correct
9.
Are fireworks exploding a physical or chemical change?
a)
phyiscal
b)
chemical
10.
Ability to rust is this type of property:
a)
Physical property
b)
Chemical property
c)
mechanical property
d)
banana party
11.
This is an example of a
a)
physical change
b)
chemical change
c)
mechanical change
d)
electronic change
12.
What type of reaction occurs in a hand warmer
a)
exothermic
b)
endothermic
c)
hi
d)
both
13.
If a chemical reaction is EXOTHERMIC, the temperature would....
a)
Stay the same
b)
Increase
c)
Decrease
d)
in the jungle the mighty jungle
14.
When iron nails get rusty, heat is released. What process is this?
a)
Exothermic
b)
Endothermic
c)
chemical
d)
bananas
15.
In an endothermic reaction the system is releasing energy.
a)
True
b)
False
c)
both
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