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Worksheetshow things react with one another
Total questions: 25
Worksheet time: 41mins
Name
Class
Date
1.
What kind of properties can only be observed when a substance changes into a different substance?
a)
physical properties
b)
chemical properties
c)
liquid properties
d)
real properties
2.
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
3.
If water has a boiling point of 100o C (212o F), what state would it be in at room temperature?
a)
gas
b)
liquid
c)
plasma
d)
Bose-Einstein condensate
4.
What characteristic defines all chemical changes?
a)
There is a change of state.
b)
Electricity is produced.
c)
A new material is formed.
d)
Bubbles are produced.
5.
Is being able to melt physical or chemical
a)
physical
b)
chemical
c)
ducktile
d)
maluable
6.
Is making a cake physical or chemical
a)
physical
b)
chemical
c)
ducktile
d)
maluable
7.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
8.
Is hammering wood together to build a house a chemical or physical change?
a)
chemical
b)
physical
9.
Is melting butter for popcorn a chemical or physical change?
a)
chemical
b)
physical
10.
Is making salt water to gargle with a physical or chemical change?
a)
physical
b)
chemical
11.
A change in the size, shape, or state of matter.
a)
chemical change
b)
physical change
c)
chemical reaction
d)
electron change
12.
Which of the following is NOT an example of a physical change?
a)
crumpled paper
b)
pencil sharpening
c)
shrunken clothing
d)
sour milk
13.
If you dissolved a lot of salt in some water in a large dish and put the dish in bright sunlight on a hot day, what would be left in the dish after a long time?
a)
dry salt
b)
water with no salt
c)
the same salty water as before
d)
nothing
14.
Kim puts an ice cube in a beaker and it melts. This is a good example of:
a)
a physical change.
b)
a chemical change.
c)
an experiment.
d)
an analysis.
15.
Photosynthesis is an example of a
a)
physical change
b)
chemical change
16.
When you break a cracker into pieces it is a
a)
Chemical change
b)
Physical change
c)
Chemical Weathering
d)
Physical Weathering
17.
Which of the following does the discoloration of a coin describe?
a)
Chemical Change
b)
Physical Change
c)
None of the above
d)
Both
18.
Freezing Juice?
a)
Physical Change
b)
Chemical Change
19.
Melting a chocolate bar?
a)
Physical Change
b)
Chemical Change
20.
Exploding Fireworks?
a)
Physical Change
b)
Chemical Change
21.
A tomato chopped up to make salsa?
a)
Physical Change
b)
Chemical Change
22.
Burning a sheet of paper?
a)
Physical Change
b)
Chemical Change
23.
Rotting bananas?
a)
Physical Change
b)
Chemical Change
24.
Cutting your hair?
a)
Physical Change
b)
Chemical Change
25.
Leaves changing colors?
a)
Physical Change
b)
Chemical Change
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