Trimester 2 Unit 3

Question 1

pH

Answer 1

values on the scale range from 0-14
used to tell if something is an acid or a base, measures the concentration of [H+]

Question 2

Acid

Answer 2

pH of less than 7, reacts with metals, tends to taste sour, when added to water it releases H+ ions(H30+)

Question 3

Acid Equation Example

Answer 3

HCl-> H + Cl

Question 4

Common acids

Answer 4

batteries, lemons,tomatoes,stomach acid, grapes, vinegar

Question 5

Bases

Answer 5

pH greater than 7, reacts with organic material, tend to taste bitter, slippery, releases OH- ions when added to water

Question 6

Base Equation Example

Answer 6

NaOH-> Na + OH

Question 7

Common Bases

Answer 7

Baking soda, Soap, Bleach, Drain Cleaner, Ammonia

Question 8

Neutral

Answer 8

pH of 7, neither acidic or basic, pure water, H2O=HOH

Question 9

Neutralization

Answer 9

we can neutralize an acid with a base and a base with an acid

Question 10

pH Indicator

Answer 10

a substance that changes color in the presence of an acid or base, EX: cabbage juice, litmus papper

Question 11

What are most of the substances considered Bases

Answer 11

cleaning supplies

Question 12

What are the effects of C02 on the human body

Answer 12

our cells would be unable to function

Question 13

What is the healthy pH range for human blood

Answer 13

7.4

Question 14

What are the effects of C02 on the ocean

Answer 14

it becomes acidic

Question 15

What organisms are most affected by ocean acidification

Answer 15

ones with shells

Question 16

What does it mean that water is a polar molecule?

Answer 16

It means the oxygen is pulling the electrons to it so it will have a partial negative charge while hydrogen has a positive charge

Question 17

What is a Hydronium Ion

Answer 17

(H3O+)

Question 18

What is a Hydroxide Ion

Answer 18

(OH-)

Question 19

What is a neutral pH?

Answer 19

7

Question 20

What is the pH of an acid?

Answer 20

pH of 1-6

Question 21

What’s the pH of a Base?

Answer 21

pH of 8-14

Question 22

What happens to the pH when we increase the number of hydrogen ions?

Answer 22

It will lower it

Question 23

On the pH scale, how do you find the strongest acids and bases?

Answer 23

Higher the number the stronger the base
Lower the number the stronger the acid

Question 24

What solution has more OH- ions than H+ ions?

Answer 24

A basic Solution

Question 25

What color is Phenolphthalein in an acid

Answer 25

white/clear

Question 26

What color is Phenolphthalein in a base

Answer 26

dark pink/dark red

Question 27

What color is Phenolphthalein in a neutral substance

Answer 27

clear

Question 28

What color is Bromothymol Blue in an acid

Answer 28

orange/yellow

Question 29

What color is Bromothymol Blue in a base

Answer 29

blue

Question 30

What color is Bromothymol Blue in a neutral substance

Answer 30

blue

Question 31

what color is Red Litmus paper in an acid

Answer 31

pink

Question 32

What color is Red Litmus paper in a base

Answer 32

blue

Question 33

What color is Red Litmus paper in a neutral substance

Answer 33

red

Question 34

What color is Blue Litmus Paper in an acid

Answer 34

red

Question 35

What color is Blue Litmus Paper in a base

Answer 35

blue

Question 36

WHat color is Blue Litmus Paper in a neutral substance

Answer 36

blue

Question 37

Formula for pH

Answer 37

PH=-log[H+]

Question 38

pOH

Answer 38

Power of hydroxide, measures the concentration of [OH-]

Question 39

What’s the easy why of finding the pH and pOH

Answer 39

They add up to 14

Question 40

How to find [H+] from pH

Answer 40

[H+]= 10-pH

Question 41

How to name acids without oxygen

Answer 41

1) Drop the -ide 2) Put the name in between hydro__ic acid

Question 42

How to name acids with oxygen that end in -ate

Answer 42

Polyatomic 1) drop the -ate 2) put in front of -ic acid

Question 43

How to name acids that have oxygen and end in -ite

Answer 43

1) Drop the -ite 2) Put in front of -ous acid

Question 44

What is HCl name

Answer 44

Hydrochloric Acid

Question 45

What is the name of NO3

Answer 45

Nitric Acid

Question 46

Naming Exceptions

Answer 46

H3PO4= Phosphoric Acid H3PO3= Phosphorus Acid H2SO4= Sulfuric Acid H2SO3= Sulfurous Acid

Question 47

What are Binary Acids

Answer 47

Acids with two ions EX: HCl, HBr

Question 48

What is a ternary acids

Answer 48

Polyatomic ions with three ions EX: H2SO3, HNO2

Question 49

If the pH decreases by 1 unit what happens to the [H+]

Answer 49

Increases by 10x

Question 50

If the pH increases by 2 units what happens to the [H+]

Answer 50

100x less