Properties of Water

Question 1

Water is polar

Answer 1

Oxygen end acts negative. The hydrogen end acts positive. Causes the water to act polar like a magnet.

Question 2

Hydrogen bonds exist between Water Molecules:

Answer 2

• Formed between a highly electronegative atom(like oxygen in another water), of a polar molecule and a hydrogen. Weak bonds but strong in great numbers.

Question 3

Interaction Between Water Molecules:

Answer 3

Negative oxygen end of one water molecule is attracted to the positive hydrogen end of another water molecule to form a hydrogen bond.

Question 4

Cohesion

Answer 4

Attraction between particles of the same substance (why water is attracted to it self).
Results in surface tension(A measure of the strength of water’s surface).

Question 5

Adhesion

Answer 5

Attraction between two different substances.
Water will make hydrogen bonds with other substances such as glass, soil, plant tissues and cotton.
Capillary action - water molecules will “tow” each other along when in a thin glass tube. Gives water the ability to climb.

Question 6

High specific Heat capacity

Answer 6

A lot of energy is required to raise or lower 1kg of substance by 1 degree Celsius.

Question 7

Water vapor

Answer 7

Water vapor forms a kind of global “blanket” which helps to keep the Earth Warm.
Heat radiated by the sun is absorbed and held by the water vapor.

Question 8

Density

Answer 8

Water is less dense as a solid.