Worksheetschemical change
Total questions: 20
Worksheet time: 9mins
Name
Class
Date
1.
a)
Physical Change
b)
Chemical Change
2.
a)
Physical Change
b)
Chemical Change
3.
a)
Physical Change
b)
Chemical Change
4.
a)
Physical Change
b)
Chemical Change
5.
a)
Physical Change
b)
Chemical Change
6.
a)
Physical Change
b)
Chemical Change
7.
a)
Physical Change
b)
Chemical Change
8.
a)
Physical Change
b)
Chemical Change
9.
a)
Physical Change
b)
Chemical Change
10.
What key words, when present in a question about chemical reactions, might indicate a chemical change is occuring? Check all that apply.
a)
Bubbling
b)
Fizzing
c)
Dissolving
d)
Evaporating
11.
Which of the following does NOT indicate a chemical reaction is occuring? Check all that apply.
a)
Unknown A dissolves into Unknown B
b)
Unknown A creates fizzing and bubbles when combined with Unknown B
c)
Unknown A sinks to the bottom when added to Unknown B
d)
Unknown A floats to the top when added to Unknown B
12.
Which of the following is a sign that a chemical reaction has occurred?
a)
change in shape
b)
melting
c)
formation of a gas
d)
dissolving
13.
Is melting butter for popcorn a chemical or physical change?
a)
chemical
b)
physical
14.
A solid piece of chocolate is melted and changed to liquid form. Which property of the piece of chocolate will remain the same?
a)
Texture
b)
Temperature
c)
Shape
d)
Mass
15.
A change where one or more new substances are created.
a)
Physical Change
b)
Chemical Change
16.
Change in color is a physical change.
a)
True
b)
False
17.
Fizzing, foaming, and burning are all examples of
a)
Chemical change
b)
Physical change
18.
Rust on an iron bar is an example of chemical change.
a)
True
b)
False
19.
Burning wood
a)
physical change
b)
chemical change
20.
Acid in stomach, breaking down food.
a)
physical change
b)
chemical change
100 %
