4.5 Study Guide

Question 1

What is a solvent?

Answer 1

It is a substance that dissolves other substances.

Question 2

What is cohesion?

Answer 2

It is H bonding between H2O molecules.

Question 3

What is heat of vaporization?

Answer 3

It is the energy it takes for 1 gram of water to evaporate. To become water vapor, polar bonds must be completey broken.

Question 4

What are the five properties of water?

Answer 4

They are:
-Cohesion & Adhesion
-Water is the solvent of life
- Ice is less dense than liquid water
-High Specific Heat
- Heat of vaporization

Question 5

Examples of why each property is important to living things.

Answer 5

They are important bevuase it needed for survival of organisms like for example cohesion and adhesion is needed for plant survival.

Question 6

Explain how water’s polarity or ability to make hydrogen bonds gives it each property.

Answer 6

Water molecule attracts other water molecules because of the opposite charges between them, forming hydrogen bonds.