2.5 Study Guide

Question 1

Cohesion

Answer 1

refers to the attraction between water molecules specifically

Question 2

Adhesion

Answer 2

refers to the attraction between other substances

Question 3

Solvent

Answer 3

solvents dissolve solutes creating solutions

Question 4

Specific Heat

Answer 4

the amount of energy it takes to heat up 1 gram of substance by 1 degree C

Question 5

Heat of Vaporization

Answer 5

energy it takes for 1 gram of water to evaporate to become water vapor

Question 6

Concentration

Answer 6

the amount of a substance, such as a salt, that is in a certain amount of tissue or liquid, such as blood

Question 7

pH

Answer 7

a measure of the concentration of hydrogen ions in a solution

Question 8

pOH

Answer 8

the measure of acidity or alkalinity of a solution by determining the concentration of OH− ions

Question 9

Hydroxide Ion

Answer 9

a diatomic anion with chemical formula OH−

Question 10

Hydronium Ion

Answer 10

an ion formed by the combination of a hydrogen ion with a water molecule

Question 11

Acid

Answer 11

have a higher concentration of hydronium ions than pure water, and a pH lower than 7

Question 11

Base

Answer 11

have a lower concentration of hydronium ions than pure water, and a pH higher than 7

Question 12

5 Properties of Water

Answer 12

1. Cohesion and Adhesion
2. Water is the solvent of life
3. The special case of ice
4. High Specific Heat
5. Heat of Vaporization

Question 13

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

Answer 13

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

Question 14

If pH8 and pOH6, acide or base?

Answer 14

base

Question 15

If pH3 and pOH11, acid or base?

Answer 15

acid

Question 16

If pH7 and pOH7, acid or base

Answer 16

neutral

Question 17

pH of 3 or pH of 13

Answer 17

(H30+) = 10^-3 > (H30+) = 10^-13

Question 18

pOH of 3 or pOH of 13

Answer 18

(OH-1) = 10^3 < (OH-1) = 10^-13