1. What type of solution is formed when gas is dissolved in liquid?

a.carbonated water
b.hard water
c.vinegar
d.wine

2. Which of the following environmental problems can be separated by physical manipulation?

a.oil spill
b.garbage in the landfill
c.flood water
d.smog

3. Which substance is a mixture?

a.oxygen
b.tap water
c.chicken noodle soup
d.carbon dioxide

4. Which is a solvent in a cup of coffee?

a.coffee
b.creamer
c.sugar
d.water

5. The children prepared juice drink for their food festival by dissolving powdered juice in a water. What kind of mixture did they form?

a.colloids
b.suspension
c.solution
d.saturated solution

6. An oil spill is one of the environmental problem that occur in the bodies of water. What kind of mixture is formed when oil is mixed with water?

a.colloids
b.suspension
c.solution
d.saturated solution

7. Which is an example of a colloid?

a.mayonnaise
b.liquid juice
c.cooking oil
d.bubbles in water

8. Which is a miscible solution?

a.coconut oil to distilled water
b.bleach to water
c.gasoline to tap water
d.grease to liquid soap

9. ________ is a technique used in separating a soluble solid from a liquid ( a soluble substance does dissolve to form a solution ).

a.filtration
b.evaporation
c.decantation
d.sieving

10. _______ is a technique in which an insoluble solid is separated from a liquid. It uses a filter like mesh cloth or filter paper to separate solid components from a liquid.

a.decantatio
b.sieving
c.evaporation
d.filtration​