Potable Water

Question 1

Definition of pure

Answer 1

Contains one element or compound only

Question 2

Definition of formulation

Answer 2

A mixture with a fixed composition for its job ( fixed bloiling point?)

Question 3

A mixture definition

Answer 3

Will have variable boiling points

Question 4

Potable water

Answer 4

Is safe to drink as no microbes, not to many dissolved salts and a ph of 6.5-8.5
It may be naturally occurring or treated

Question 5

The 7 steps of treating water

Answer 5

Groundwater - rain water, underground water
Filtration- separate sands and particles
Coagulation- chemicals to bring particles together
Sedimentation- gravity to remove suspended soils
Sterilisation- killing/ remove microorganisms (high temp, pressure, chem)
Ph check- determine purity
Fluoridation- fluorine added for tooth decay ( controversial cause salty)

Question 6

2 main steps to treat water from lakes

Answer 6

Filteration- remove particles/ impurity’s

Chlorination- inhibit bacterial growth

Question 7

How to test if water is pure

Answer 7

Boil and if it boils at 100 degrees it’s pure

Question 8

What does effluent mean

Answer 8

Has air bubbles running through the water to encourage bacteria breakdown

Question 9

What’s a life cycle assessment

Answer 9

Looks at the total environmental cost of a product