2.5 Study Guide

Question 1

Definition of Cohesion

Answer 1

Hydrogen bonding between two water molecules (water to water attraction)
-creates surface tension

Question 2

Definition of Adhesion

Answer 2

Hydrogen bonding between water and other substance (water to other attraction)
- capillary attraction

Question 3

Definition of Solvent

Answer 3

A solvent is what dissolves a solute which creates solutions.
Solvent= water

Question 4

Definition of Specific Heat

Answer 4

the amount of energy it takes to heat up 1 gram of a substance by 1* Celsius- takes more energy to heat up

Question 5

Definition of Heat of Vaporization

Answer 5

Energy it takes for 1 gram of water to evaporate

Question 6

What are the five properties of water?

Answer 6

1. Cohesion and Adhesion
2. Water is the solvent of life
3. The special case of ice
4. High Specific Heat
5. Heat of Vaporization

Question 7

How does waters polarity give it its properties

Answer 7

Its properties allow it to dissolve other polar substances very easily.

Question 8

Why is each property important to living things?

Answer 8

To help support the life processes of living things. All life occurs in water, both inside and outside of the cell. Water vaporization helps regulate body temperature, Its specific heat helps resist temperature changes, it is a solvent, and can stick and bond to itself and other objects.