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