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WorksheetsEndo/Exo Chemical Reactions
Total questions: 16
Worksheet time: 9mins
Name
Class
Date
1.
After you mix two substances together, a new substance forms. This is an example of:
a)
Physical Change
b)
Chemical Change
2.
Sugar dissolves in water. This is an example of....
a)
Physical Change
b)
Chemical Change
3.
If a chemical reaction is EXOTHERMIC, the temperature would....
a)
Stay the same
b)
Increase
c)
Decrease
4.
When you freeze water, it turns to ice. What kind of change is this?
a)
Physical
b)
Chemical
5.
Which of the following is a sign that a chemical reaction has occurred?
a)
change in shape
b)
melting
c)
bubbles of gas appear
d)
dissolving
6.
Is hammering wood together to build a house a chemical or physical change?
a)
chemical
b)
physical
7.
In an endothermic reaction the system is releasing energy.
a)
True
b)
False
8.
What type of reaction occurs in a hand warmer
a)
exothermic
b)
endothermic
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
11.
Surrounding temperature gets cold
a)
Endothermic
b)
Exothermic
12.
Surrounding temperature gets warmer
a)
endothermic
b)
exothermic
13.
In order to earn extra spending money, Dalton babysits children after school. The greater the number of hours he babysits, the more money he earns.
h = the number of hours Dalton babysits
m = the amount of money Dalton earns
Which of the variables is dependent?
h = the number of hours Dalton babysits
m = the amount of money Dalton earns
Which of the variables is dependent?
a)
h
b)
m
14.
a)
the independent variable is distance
b)
the independent variable is d=25 t
c)
the dependent variable is time
d)
the dependent variable is distance
15.
On a graph, which axis shows the independent variable?
a)
x-axis
b)
y-axis
c)
neither
d)
it changes
16.
On a graph, which axis shows the dependent variable?
a)
x-axis
b)
y-axis
c)
neither
d)
it changes
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