Jumat, 19 Oktober 2012

Soal Fisika Kelas VII


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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