Chapter 3 Resource: Matter and its Changes

Name Date Class
2
Reinforcement
Chemical Properties
and Changes
Directions: Answer the following question on the lines provided.
1. What are the differences between physical and chemical changes Explain them, giving two
examples of each.
Meeting Individual Needs
Directions: Label the following changes as C for chemical or P for physical.
2. forming a bar of copper into a wire
3. frying an egg
4. breaking a glass
5. bleaching your hair
6. transferring graphite from a pencil to paper when writing
7. dissolving a drink mix in water
8. shooting off fireworks
9. a puddle drying up after a rain
Directions: In number 10 below, a code letter has been substituted for each letter in the alphabet. To find out
what the sentence says, use the following key to decode it. In the key, the code letters are shown directly below
the alphabet letters they stand for. Write the correct letter above each code letter, then read the sentence.
10.
A
S
F S N N
B C
W Q
D
G
GZUCBA
E
L
C N
F
V
G
A
H
X
B K V
S B D
I
C
J
R
K
Y
L
E
M
F
N
B
O
K
P
I
QU L SVLG
QX L F CQS E
Q
J
R
U
S
N
KU
T
V
U
Z
V
P
W
O
QXSB A L
X
H
Y
D
Z
M
G L N V U K D L G
Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.
28 Matter and Its Changes