Water

Question 1

Why is water polar

Answer 1

O is slightly negative and the hydrogen is slightly positive

Question 2

What bond does water contain

Answer 2

Hydrogen from attracted forces

Question 3

What does high specific heat capacity mean

Answer 3

Takes a lot of energy to break h bonds and increase the temp of water

Question 4

What is latent heat of vaporisation

Answer 4

Takes a lot of energy to evaporate water so sweating is an effective method of cooling

Question 5

What is cohesion

Answer 5

The tendency for water molecules to stick together

Question 6

How is cohesion used

Answer 6

Allows water to be pulled up a xylem vessel in plants

Question 7

What is surface tensions use for living things

Answer 7

Supports small organisms

Question 8

How is water a metabolite

Answer 8

In condensation and hydrolysis

Question 9

Is water a solvent

Answer 9

Yes it is a solvent in which metabolic reactions occur

Question 10

What are 6 properties that make water important for organisms

Answer 10

1. Cohesion creates surface tension that supports small organisms living on waters surface (pond skaters) 2. Used as a metabolite in condensation/ hydrolysis 3. Used as a solvent so metabolic reactions can occur/ allow transport of substances 4. High specific heat capacity so buffers change in temp, creating stable environment for fish (as takes energy to break H binds and increase temp) 5. Requires lots of energy to break H bonds and evaporate water so sweating is effective method of cooling 6. Polar so has H bonds as O- and H+(weak but strong) wakes water cohesion used to pull water up xylem in continuous column