Purifying Water Flashcards
1
Q
What is water of the correct quality essential for?
A
Life
2
Q
For humans, what should drinking water be?
A
Sufficiently low in levels of dissolved salts and microbes
3
Q
How is water of the correct quality produced?
A
By choosing an appropriate water source, passing the water through filter beds to remove any solids, sterilising with chlorine
4
Q
What do water filters contain?
A
Carbon, silver and ion exchange resins
5
Q
What do water filters do?
A
Remove some dissolved substances from tap water, and improve the taste and quality
6
Q
What does adding chlorine reduce?
A
Number of microbes in the water
7
Q
Why is fluoride added to water?
A
To improve dental health
8
Q
How can pure water be produced?
A
Distillation
9
Q
Why is distillation expensive?
A
As it uses a large amount of energy
