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Physical And Chemical Change
Test Description: 1
Instructions: Answer all questions to get your test result.
1) Which of the following is a chemical change?
A
melting
B
rusting
C
bending
D
cutting
2) Which statement is true about physical changes and chemical changes?
A
physical and chemical changes can not happen at the same
B
chemical changes always produce new substances
C
chemical changes are not observable
D
physical changes can change both physical and chemical properties
3) Which of the following is a chemical change?
A
melting
B
tarnishing
C
mixing
D
grinding
4) Which of the following is a physical change?
A
burning wood
B
mixing cookie dough
C
baking a cake
D
frying an egg
5) Which of the following is NOT a physical change?
A
nailing together boards of wood
B
adding food coloring to water
C
breaking an egg
D
dying your hair
6) Which of the following is an example of a chemical change?
A
defrosting food in the microwave
B
ice melting in a glass
C
putting on make-up
D
wood burning in a fireplace
7) Which of the following is NOT a chemical change?
A
antacid that neutralizes stomach acid
B
silver tarnishing in open air
C
salt being mixed with water
D
bicycle rusting
8) Scientists study the characteristics of substances to better understand the natural world. Which of the following is not a chemical or physical characteristic of a substance?
A
odor
B
cost
C
density
D
color
9) Which of the following is evidence of a chemical change?
A
all of the above
B
color change
C
heat forming
D
bubbles
10) You blow dry your wet hair. What type of change?
A
-
B
Physical
C
Chemical
D
-
11) You forgot to dry the bread knife when you washed it and reddish brown spots appeared on it. (Rust)
A
-
B
Chemical
C
-
D
Physical
12) True or False. When ice cream melts, a chemical change occurs.
A
True
B
False
C
-
D
-
13) In a fireworks show, the fireworks explode giving off heat and light. What type of change?
A
-
B
chemical
C
no change
D
physical
14) Chewing food to break it down into smaller particles represents a _________ change, but the changing of starch into sugars by enzymes in the digestive system represents a ___________change.
A
physical, chemical
B
chemical, physical
C
physical, physical
D
chemical, chemical
15) A straight piece of wire is coiled to form a spring. What type of change?
A
chemical
B
-
C
physical
D
no change
*select an answer for all questions
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