Lecture 3

Question 1

Adhesion

Answer 1

The attraction between different kinds of molecules

Question 2

Base

Answer 2

A substance that reduces the hydrogen ion concentration of a solution

Question 3

Buffer

Answer 3

Substance the consists of acid and base forms in a solution and minimizes changes in pH when extraneous acids and bases are added to solution

Question 4

Cohesion

Answer 4

The binding together of like molecules often by hydrogen bonds

Question 5

Heat

Answer 5

Total amount of kinetic energy due to random motion of atoms or molecules in body of matter

Question 6

Hydrogen ion

Answer 6

A single proton with a charge of 1+

Question 7

Hydrophilic

Answer 7

Having an affinity for water

Question 8

Hydrophobic

Answer 8

Having an aversion to water, forming droplets in water

Question 9

Molarity

Answer 9

A common measure of solute concentration.

Question 10

Mole

Answer 10

The number of grams of a substance that equals it’s molecular weight in daltons and contains Avogadro’s number of molecules

Question 11

pH

Answer 11

A measure of hydrogen ion concentration ranging in value from 0-14

Question 12

Polar molecule

Answer 12

A molecule such as water with opposite charges on different ends of the molecule

Question 13

Solute

Answer 13

A substance that is dissolved in water

Question 14

Solution

Answer 14

A liquid that is a homogenous mixture of two or more substances

Question 15

Solvent

Answer 15

The dissolving agent of a solution. Water

Question 16

Temperature

Answer 16

A measure of heat reflecting in degrees

Question 17

Acid

Answer 17

A substance that increases the hydrogen ion concentration of a solution