Water Properties/Treatment

Question 1

Water polarity:

Answer 1

is polar with molecular shape as bent and bond angle of 105˚. Hydrogen bonding.

Question 2

5 properties of water:

Answer 2

1) Cohesion
2) Adhesion
3) High specific heat
4) High heat of vaporisation
5) Less dense as a solid

Question 3

Cohesion:

Answer 3

Is the attraction between molecules or atoms of the same substance.
- Causes surface tension

Question 4

Surface tension:

Answer 4

Tendency for liquids surface to resist rupture when put under tension.

Question 5

Relation between cohesion and surface tension:

Answer 5

Strong hydrogen bonding are present within water molecules. Hence, surface molecules are surrounded by molecules around it creating an inward force. This pulls all surface molecules inwards in-turn reducing surface area. Hence high surface tension.

Question 6

Adhesion:

Answer 6

Refers to the attraction between the molecules or atoms of two different substances.