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Flashcards in Water and Life Deck (13)
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Four Properties of Water

1. High Heat Capacity
2. Water is a Solvent
3. Water is Cohesive
4. Frozen Water is Less Dense than Liquid Water

1

Heat

The amount of energy associated with the movement of the atoms and molecules in a body of matter.

2

Temperature

A measure of the intensity of heat, reflecting the average speed of molecules.

3

Evaporative Cooling

The property of a liquid whereby the surface becomes cooler during evaporation (liquid to gas).

4

Cohesion

Tendency of molecules to stick together. It results from hydrogen bonds. Important for surface tension and water transport in plants.

5

Solvent

Dissolving agent in a solution.

6

Solute

Substance that is dissolved in a solution.

7

Solution

Liquid consisting of homogenous mixture of two or more substances: solvent and solute.

8

Aqueous Solution

A solution in which water is the solvent.

9

Acid

A substance that increases the hydrogen ion (H+) concentration in a solution (lower pH).

10

Base

A substance that decreases the hydrogen ion concentration in solution (raises pH).

11

pH scale

Measure of relative acidity of a solution ranging from zero (most acidic) to fourteen (most basic).

12

Buffers

A chemical substance that resists changes in pH by accepting hydrogen ions from or donating hydrogen ions to solution.