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- 1. Multiple Choice
How are you going to separate salt from salt water solution?
by evaporation process
by decantation process
by using magnet
by sieving
- 2. Multiple Choice
How are you going to separate the iron filings from sulfur powder?
by sieving
by using magnet
by decantation process
by dissolving sulfur to water
- 3. Multiple Choice
How are you going to separated gravels from sand?
by evaporation process
by decantation process
by sieving
by using magnet
- 4. Multiple Choice
You do not like almond nuts in your vegetable salad. Are you going to do to get rid of those?
using strainer
use distillation process
boil the vegetable salad and let almond evaporate
pick them one by one
- 5. Multiple Choice
What process of separating mixture is illustrated on the animated gif posted here?
decantation
distillation
evaporation
condensation
- 6. Multiple Choice
Water changes to water vapor.
condensation
evaporation
precipitation
sublimation
- 7. Multiple Choice
Dry ice is solid. When it is left under room temperature it gives off gas. What process is this?
evaporation
distillation
decantation
sublimation
- 8. Multiple Choice
Which of these is a physical quantity of matter?
density
reactivity
corrosiveness
flammability
- 9. Multiple Choice
Which of these is a chemical properties of matter?
color
boiling point
melting point
corrosiveness
- 10. Multiple Choice
Metals can be flattened like a sheet. What do you call this physical property of matter?
malleability
flammability
corrosiveness
conductivity
- 11. Multiple Choice
Which statement below describes the change that brings about by fireworks?
Physical change : fireworks change it shape
Physical change : fireworks emit different colors and energy
Chemical change: fireworks show different sizes of sphere
Chemical change : fireworks emit different colors and energy
- 12. Multiple Choice
What kind of changes in matter is shown here?
chemical change
physical change
phase change
none of these
- 13. Multiple Choice
Which of these is NOT a concrete evidence of the occurrence of chemical change?
change in color
formation of bubbles
production of a new substance
production of light and release of energy
- 14. Multiple Choice
Which of these is an evidence that physical change naturally happens in nature?
formation of acid rain
rusting of metal due to acid rain
formation of clouds in the stratosphere
production of sugar in plants
- 15. Multiple Choice
In the initial digestion of food inside the mouth, when does chemical change happens?
when food breaks down into small pieces
when saliva reacts and lubricate food
when food is swallowed already
when food is already digested inside the small instestine
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