water purification

People must have _______ to drink in order to survive.

• frozen water
• clean water
• contaminated water
• polluted water

Tags

NGSS.MS-ESS2-4

NGSS.MS-LS2-1

What is the best way to purify water?

• Add salt

• Put inside the refrigerator

• Filtration or Boiling

• Find a very clean stream of water

Tags

NGSS.MS-PS1-2

Can sand pass through filter paper?

• Yes

• No

Which of these particles is NOT able to pass through a sand, gravel, and charcoal filter?

• bacteria

• water

• viruses

• large piece of dirt

During the purification process, filtration separates the

• dissolved impurities

• Solid impurities

Th components of filtration are separated based on

• boiling point

• colour

• particle size

What does chlorination do to the water?

• Removes microorganisms

• colour the water

• Makes the water taste nice

• Removes twigs and sediment

What are two things that water treatment plants need to do?

• Clean and disinfect the water
• Boil and evaporate the water
• Remove the animals and plants
• Add chemicals and remove pesticides

Tags

NGSS.MS-PS1-2

Used to separate an insoluble solid from liquid or soluble solid

• Filtration

• Distillation

• Crystallisation

• Evaporation

Used to separate a dissolved solid from its solution

• Filtration

• Evaporation

• Crystallisation

• Sublimation