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