General Science

Importance of Water
A method which is used to obtain fresh water, is
chlorination
filtration
distillation
zinc
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Simple Chemical Reactions
Melting, freezing, boiling, evaporation and condensation are all
physical change
chemical change
complex change
electrical change
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Energy Resources
The need and demand of fossils fuel can be reduced by
conserving energy
storing energy
utilizing energy
transforming energy
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Physical and Chemical Changes
Physical changes are
reversible
irreversible
permanent
temporary
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Electric Circuits and Currents
The charge flowing in the wire when we turn the light on, is
positive ions
negative ions
electrons
protons
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Atoms and Atom Model
The more the neutrons in an atom, the
lighter it is
heavier it is
brighter it is
cooler it is
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Human Transport System
Excessive amount of glucose is passed out from body with
feces
sweat
breathing
urine
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Dispersion of Light
If light enters a dense object in angle of zero, it would
bend
reflect back
go straight
turn towards right
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Human Transport System
In one complete round of circulation, blood comes to heart
only once
two times
three times
four times
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Investigating Space
After turning of sun into red supergiant, the outer layers of sun will start turning into
discs of gases
balls of dust
clouds of gases
clouds of asteroids
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