A. Choose the correct answer !
1. The difference between physical
and chemical change is …..
a. physical change is simple while
chemical change is more complicated.
b. physical change takes long time
while chemical change occurs in short time.
c. physical change does not need
medium while chemical change needs medium.
d. physical change does not create
new substance while chemical change creates new substance.
2. Which one of the statements in
the following is the physical property?
a. reactivity
b. inflammability
c. hardness
d. stability in molecules
3. An Ice block melts to be water.
The process is defined as ….
a. physical change
b. chemical change
c. volume change
d. phase change
4. The example of chemical change
is ….
a. making a chair from wood
b. evaporated water
c. rusted iron
d. chewing food
5. Chemical reaction that results in a change of color happens when
a.
iron becomes red after it is painted.
b. apple
becomes brown when it is peeled
c.
orange is squeezed to get the juice with yellow
color
d. the
color of a rainbow in the sky
B. Answer the following
questions correctly !
1. Are the following physical or chemical properties?
a. taste
b. flammability
c. color
d. smell
e. solubility
f. breakable
2. Determine whether
the following changes are physical or chemical changes!
a. bending copper wire
b. grounding rice to produce flour
c. food digestion
d. sculpted
wood to become sculpture
e. vaporization of gasoline
f. fermentation of cassava to pro-
duce 'tape'
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