Grade 7 Chemistry Question Preview (ID: 53285)
Grade 7 Chemistry Review Game.
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One of the following is a pure substance
a) Drinking water
b) air
c) sugar
d)
When adding salt to salty water, the specific gravity of salty water
a) Increases
b) decreases
c) remains constant
d)
One of the following physical properties is measurable:
a) Color
b) density
c) taste
d)
Which one of the following mixtures is heterogeneous
a) Air
b) salty water
c) blood
d)
The device that measure the density of liquid is:
a) Ammeter
b) voltmeter
c) hydrometer
d)
Gold ring (18 carat made of gold and copper) is considered
a) Heterogeneous mixture
b) Homogeneous mixture
c) Pure substance
d)
A quantity of water in a beaker was boiled till no water remains, this water is considered pure if:
a) no solid is present in the beaker after boiling
b) few quantity of solid remains in the beaker after boiling
c) large quantity of solid remains beaker after boiling
d)
mixing nail polish and acetone produces
a) Heterogeneous mixture
b) Homogeneous mixture
c)
d)
The boiling point of water is 100oC. Boiling point is
a) descriptive property
b) measurable property
c)
d)
It is easier to separate the components of:
a) homogeneous mixture
b) heterogeneous mixture
c)
d)
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