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Grade 7 Chemistry
Test Description: Grade 7 Chemistry Review Game
Instructions: Answer all questions to get your test result.
1) One of the following is a pure substance
A
Drinking water
B
air
C
sugar
2) When adding salt to salty water, the specific gravity of salty water
A
remains constant
B
decreases
C
Increases
3) One of the following physical properties is measurable:
A
density
B
Color
C
taste
4) Which one of the following mixtures is heterogeneous
A
blood
B
salty water
C
Air
5) The device that measure the density of liquid is:
A
Ammeter
B
hydrometer
C
voltmeter
6) Gold ring (18 carat made of gold and copper) is considered
A
Homogeneous mixture
B
Heterogeneous mixture
C
Pure substance
7) A quantity of water in a beaker was boiled till no water remains, this water is considered pure if:
A
large quantity of solid remains beaker after boiling
B
no solid is present in the beaker after boiling
C
few quantity of solid remains in the beaker after boiling
8) mixing nail polish and acetone produces
A
Homogeneous mixture
B
Heterogeneous mixture
9) The boiling point of water is 100oC. Boiling point is
A
measurable property
B
descriptive property
10) It is easier to separate the components of:
A
heterogeneous mixture
B
homogeneous mixture
*select an answer for all questions
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