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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
sugar
B
Drinking water
C
air
2) When adding salt to salty water, the specific gravity of salty water
A
Increases
B
decreases
C
remains constant
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
Air
B
blood
C
salty water
5) The device that measure the density of liquid is:
A
voltmeter
B
hydrometer
C
Ammeter
6) Gold ring (18 carat made of gold and copper) is considered
A
Homogeneous mixture
B
Pure substance
C
Heterogeneous mixture
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
few quantity of solid remains in the beaker after boiling
C
no solid is present 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
descriptive property
B
measurable property
10) It is easier to separate the components of:
A
homogeneous mixture
B
heterogeneous mixture
*select an answer for all questions
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