Unit 2 Vocab - Properties of Water

Question 1

Equal sharing of the valence electrons

Answer 1

Nonpolar covalent bond

Question 2

Unequal sharing of the valence electrons

Answer 2

Polar covalent bond

Question 3

A type of chemical bond in which a hydrogen atom has a weak bond with electronegative atoms

Answer 3

Hydrogen bond

Question 4

Having a strong affinity for water

Answer 4

Hydrophilic

Question 5

Having little or no affinity for water

Answer 5

Hydrophobic

Question 6

A force existing in the surface of a body, especially a liquid, tending to minimize the area of the surface

Answer 6

Surface tension

Question 7

The amount of heat required to raise the temperature of 1 gram of a substance by 1 degree Celsius

Answer 7

Specific heat

Question 8

The amount of heat absorbed by a liquid at its boiling point that completely converts the material to gas

Answer 8

Heat of vaporization

Question 9

The condition where there is opposing physical properties at differing points, especial magnetic poles or electric charge

Answer 9

Polarity

Question 10

The molecular force between particles within a substance that acts to unite them

Answer 10

Cohesion

Question 11

The molecular force of attraction within a substance to a completely different substance

Answer 11

Adhesion

Question 12

A uniform mixture of one or more solutes dissolved in a solvent

Answer 12

Solution

Question 13

A material composed of 2 or more elements or compounds that are physically mixed together but not chemically combined (not uniform)

Answer 13

Mixture

Question 14

A substance that is a mixture of water and non-dissolved material

Answer 14

Suspension

Question 15

The substance dissolved in a given solution

Answer 15

Solute

Question 16

The substance that is responsible for dissolving a solute

Answer 16

Solvent

Question 17

Provides a measurable scale of hydrogen protons in a solution, ranges from 0-14 to describe the acidity or alkalinity of a solution

Answer 17

pH Scale

Question 18

The tendency of a system, especially that of higher animals, to maintain internal stability because of coordinated responses resulting from a stimulus

Answer 18

Homeostasis

Question 19

Proton donor, forms H+ ions in a solution

Answer 19

Acid

Question 20

Proton acceptor, forms OH- ions in a solution

Answer 20

Base

Question 21

A compound that is added to a system to resist changes in pH

Answer 21

Buffer

Question 22

A hydrogen atom containing no electrons, H+

Answer 22

Hydrogen proton

Question 23

An ion composed of O and H, OH-

Answer 23

Hydroxide ion