Fresh & Salt water Systems Checkpoint Six Flashcards
1
Q
What is distillation?
A
Technique for separating solutions that involves boiling and condensation.
2
Q
What are the steps for distillation?
A
1) salt solution in a flask is heated until water vapor rises
2) Water vapor condenses on the inside of the horizontal tube, forming small droplets.
3) Horizontal tube collects droplets as distilled liquid water.
3
Q
What are the advantages of distillation?
A
- water does not contain any undesirable contaminants
- can be powered by the sun
4
Q
What are the disadvantages of distillation?
A
- removes dissolved gasses that give water a pleasant taste
- requires a lot of energy
5
Q
What is reverse osmosis?
A
Movement of water through a membrane from a high concentrated solution to one of lower concentration solution.
6
Q
What are the advantages of reverse osmosis?
A
- turns saltwater into potable water
7
Q
What are the disadvantages of reverse osmosis?
A
- expensive to run pumps (lots of electricity!)
- environmental impact (lots of waste water)
