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Science Grade 8
Test Description: Science grade 8
Instructions: Answer all questions to get your test result.
1) Oil has less mass than water
A
True
B
False
C
-
D
No
2) Oil is less dense than water
A
No
B
False
C
-
D
True
3) When particles bump against the sides of a container cause a phenomenon called______
A
State change
B
Condensation
C
Gas pressure
D
Liquid pressure
4) If gases is heated
A
Gains more energy
B
All
C
Particles will collide
D
The particles move faster
5) If a gas is cooled
A
all
B
It will have less energy
C
None
D
It will move slower
6) When are there physical changes
A
None
B
When the solution changes
C
When there is too much energy lost
D
When chemical properties substance does not change
7) What is the chemical reaction
A
When normal changes take place
B
None
C
When we get a chemical change in substances
D
When there is too much pressure
8) How do we know a chemical reaction has taken place
A
A Gas has formed (when bubbles appear)
B
There has been a colour change
C
All
D
When a solid has formed
9) Sometimes chemical changes can be
A
All
B
can be heard
C
Can be felt e.g. heat
D
Smelled
10) What is called before a reaction takes place
A
None
B
Situation
C
Reactants (before situation)
D
Movement
11) What is called after a reaction takes place
A
Products (after situation)
B
Movement
C
None
D
Situation
*select an answer for all questions
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