Chapter 2 Pt. 2

Question 1

Cohesion

Answer 1

An attraction between molecules of the same substance. Causes molecules to be drawn inwards, this is why water forms drops on smooth surfaces

Question 2

Surface Tension

Answer 2

Ability to stretch the surface of a liquid, and this is why insects can “walk on water”

Question 3

Adhesion

Answer 3

An attraction between molecules of different substances

Question 4

Capillary Action

Answer 4

How water moves from the roots of plants to the stems and leaves. This occurs because of Cohesion and Adhesion

Question 5

Kinetic Energy

Answer 5

The energy of motion

Question 6

Thermal Energy

Answer 6

A measure of the total amount of kinetic energy due to molecular motion

Question 7

Temperature

Answer 7

Represents the average kinetic energy of molecules

Question 8

Heat

Answer 8

Thermal energy in transfer from one body of matter to another

Question 9

Evaporative Cooling

Answer 9

As a liquid evaporates, its remaining surface cools. Helps stabilize temperatures in organisms and bodies of water.

Question 10

Solution

Answer 10

A liquid that is a homogenous mixture of substances

Question 11

Solvent

Answer 11

The dissolving agent of a solution

Question 12

Solute

Answer 12

The substance that is dissolved

Question 13

Aqueous Solution

Answer 13

A solution in which water is the solvent

Question 14

Hydration Shell

Answer 14

When an ionic compound is dissolved in water, each ion is surrounded by a sphere of water molecules, called this

Question 15

Hydrophilic

Answer 15

A substance that has an affinity for water. Water Loving

Question 16

Hydrophobic

Answer 16

A substance that does not have an affinity for water. Water fearing

Question 17

Colloid

Answer 17

A stable suspension of fine particles in a liquid

Question 18

Acid

Answer 18

Any substance that increases the H+ concentration of a solution

Question 19

Base

Answer 19

Any substance that reduces the H+ concentration of a solution