Fresh and Saltwater Systems: Checkpoint 5/6

Question 1

What are the water characteristics? Name at least four

Answer 1

Colour & cloudiness
Dissolved salts and minerals
Toxic substances
Bacteria
pH
Even taste

Question 2

What is water quality?

Answer 2

A measure of the amount of substances besides water in a water sample; OR description of how pure a water sample is.

Question 3

What is potable water?

Answer 3

Water that is safe for humans to drink. Potable water also pertains to other organisms

Question 4

What is salinity?

Answer 4

The amount of dissolved salts in a body of water

Question 5

What is hard water?

Answer 5

Water containing a high concentration of mostly calcium and magnesium, can sometimes include iron.

Question 6

What is soft water?

Answer 6

Water containing little or no calcium or magnesium content is considered soft water.

Question 7

Some harmful bacteria in water include:

Answer 7

E coli, Salmonella, Giardia, Shigella

Question 8

What is the ph scale?

Answer 8

Written (pH) is a scale that measures how acidic or basic water it.

Question 9

What ph level is good for the water that humans drink?

Answer 9

5.5-7.5

Question 10

What is the universal indicator?

Answer 10

Universal indicator is a substance that can be added to a solution to check pH of the solution.

Question 11

What is distillation?

Answer 11

Technique for separating solutions that involves boiling and condensation.

Question 12

What is reverse osmosis?

Answer 12

Movement of water through a membrane from a high concentrated solution to one of lower concentration solution