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Physical vs. Chemical Changes

Total questions: 61

Worksheet time: 36mins

Name
Class
Date
1.
A copper penny turning greenish after a few years is an example of ...
a)
Chemical Change
b)
Physical Change
2.
A change in which NEW substances are formed.
a)
Chemical change
b)
Physical change
c)
Casual change
d)
Formal change
3.
Which of the following is NOT an example of chemical change?
a)
sour milk
b)
burning wood
c)
breaking a pencil
d)
rust
4.
Which of the following IS a physical change?
a)
Getting a haircut
b)
Rusty metal
c)
sour milk
d)
A compound
5.
Is melting butter for popcorn a chemical or physical change?
a)
chemical
b)
physical
6.
Ripping up paper ...
a)
Chemical Change
b)
Physical Change
7.
Is a rusting bicycle a chemical or physical change?
a)
chemcial
b)
physical
8.
A change in phase ...
a)
Chemical Change
b)
Physical Change
9.
Bubbles form when two or more substances are combined ...
a)
Chemical Change
b)
Physical Change
10.
Change in size ...
a)
Chemical Change
b)
Physical Change
11.

A large, unexpected explosion that involves flames is evidence of a...

a)

Chemical Change

b)

Physical Change

12.

After mixing two solutions, a solid precipitate begins to form and the reaction is starting to give off heat! This is an example of...

a)

Chemical Reaction

b)

Physical Reaction

13.
Causes a change in odor ...
a)
Chemical Reaction 
b)
Physical Reaction
14.
Evidence of Chemical Change.
a)
New Substance 
b)
Size change
c)
State change
d)
Mixture 
15.
Evidence of a physical change.
a)
New substance
b)
Shape Change
c)
Light produced
d)
Gas released.
16.
Physical properties are
a)
properties that can be observed without changing the identity of the substance
b)
properties that describe how a substance changes into a completely different substance
17.
True or False: a physical change may produce a new substance.
a)
True
b)
False
18.
On a camping trip, Mrs. Benavides roasts a marshmallow in the campfire. She notices that the roasted marshmallow smells and tastes differently than the uncooked marshmallows. What change has taken place, and how does Mrs. Benavides know?
a)
a chemical change because the marshmallow changed in taste, color and smell
b)
no change because the marshmallow is not a new substance
c)
only a physical change because the marshmallow changed in size
d)
a chemical change because the marshmallow only changed in pH level
19.

Sodium hydroxide dissolves in water ________________

a)

Physical Change

b)

Chemical Change

20.

Hydrochloric acid reacts with potassium hydroxide to produce a salt, water and

heat. ________________

a)

Physical Change

b)

Chemical Change

21.

A pellet of sodium is sliced in two ________________

a)

Physical Change

b)

Chemical Change

22.

Water is heated and changed to steam ________________

a)

Physical Change

b)

Chemical Change

23.

Potassium chlorate decomposes to potassium chloride and oxygen gas.

________________

a)

Physical Change

b)

Chemical Change

24.

Iron rusts. ________________

a)

Physical Change

b)

Chemical Change

25.

Evaporation ________________

a)

Physical Change

b)

Chemical Change

26.

Ice melting ________________

a)

Physical Change

b)

Chemical Change

27.

Milk sours ________________

a)

Physical Change

b)

Chemical Change

28.

Sugar dissolve in in water ________________

a)

Physical Change

b)

Chemical Change

29.

Wood rotting ________________

a)

Physical Change

b)

Chemical Change

30.

Pancakes cooking on a griddle ________________

a)

Physical Change

b)

Chemical Change

31.

Grass growing in a lawn ________________

a)

Physical Change

b)

Chemical Change

32.

A tire is inflated with air ________________

a)

Physical Change

b)

Chemical Change

33.

Food is digested in the stomach ________________

a)

Physical Change

b)

Chemical Change

34.
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
35.
Is melting butter for popcorn a chemical or physical change?
a)
chemical
b)
physical
36.
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
37.
Which of the following is NOT an example of a physical change?
a)
crumpled paper
b)
pencil sharpening
c)
shrunken clothing
d)
rust
38.
Freezing Juice?
a)
Physical Change
b)
Chemical Change
39.
A change where one or more new substances are created.
a)
Physical Change 
b)
Chemical Change 
40.
When you break a cracker into pieces it is a...
a)
Chemical change
b)
Physical change
41.
What kind of properties can only be observed when a substance changes into a different substance?
a)
physical properties
b)
chemical properties
42.
A mixture is the result of a physical change because...
a)
The parts can be separated
b)
A new substance is made
c)
There is a chemical reaction
d)
One part of the mixture disappears
43.
Which of these is a result of a physical change?
a)
A new odor
b)
A new gas
c)
A new chemical substance
d)
A solution
44.
Which of these does NOT happen during a chemical change?
a)
Atomic bonds are formed or break apart
b)
New substance(s) are formed with different chemical properties
c)
The number of atoms in the reaction stays the same
d)
The chemical properties of the beginning substance(s) are the same as those of the end product(s)
45.
Is a firefly lighting up a physical or chemical change?
a)
Physical
b)
Chemical
46.
Is water melting a physical or chemical change?
a)
Physical
b)
Chemical
47.
Is salt dissolving in water a physical or chemical change?
a)
Physical
b)
Chemical
48.
Is digesting your food a physical or chemical change?
a)
Physical
b)
Chemical
49.
Is a burning candle a physical or chemical change?
a)
Physical
b)
Chemical
50.
Is a tree sprouting a physical or chemical change?
a)
Physical
b)
Chemical
51.
Is melting iron a physical or chemical change?
a)
Physical
b)
Chemical
52.
Is a car using fuel a physical or chemical change?
a)
Physical
b)
Chemical
53.
Is sour milk a physical or chemical change?
a)
Physical
b)
Chemical
54.
Is bending copper wire a physical or chemical change?
a)
Physical
b)
Chemical
55.
Is steam a physical or chemical change?
a)
Physical
b)
Chemical
56.
Are hard boiled eggs a physical or chemical change?
a)
Physical
b)
Chemical
57.
Is melting butter a physical or chemical change?
a)
Physical
b)
Chemical
58.
When things burn this is a chemical reaction called COMBUSTION.  What does every combustion reaction require?
a)
Hydrogen
b)
Carbon dioxide
c)
Oxygen
d)
Water
59.
Is adding sugar to your coffee a physical or chemical change?
a)
Physical
b)
Chemical
60.
When baking soda and vinegar mix it creates a bubbly mess. Is this a chemical or physical change?
a)
Physical
b)
Chemical
61.
If liquid nitrogen is brought to a boil, is this a physical or chemical change?
a)
Physical
b)
Chemical

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