Chap 26: Acids And Bases

Question 1

3 Types of acid and examples

Answer 1

Citric acid-citrus fruit
Ethanoic acid-vinegar
Carbonic acid-fizzy drinks

Question 2

Lab acids

Answer 2

Hydrochloric acid

Sulphuric acid

Question 3

Hydrochloric acid

Answer 3

HCl

Question 4

Sulphuric acid

Answer 4

H2SO4

Question 5

Alkali

Answer 5

A base soluble in water

Question 6

4 everyday examples of bases

Answer 6

Toothpaste
Soap
Bleach
Oven cooking

Question 7

Lab bases

Answer 7

Sodium Hydroxide

Calcium hydroxide

Question 8

Sodium hydroxide

Answer 8

NaOH

Question 9

Calcium hydroxide

Answer 9

CAOH2

Question 10

Indicator

Answer 10

A chemical that shows by means of color change whether a substance is an acid or a base

Question 11

What happens to Litmus paper?

Answer 11

An acid turns blue litmus paper red and a base turns red litmus paper blue

Question 12

Explain the pH scale

Answer 12

Goes from 0-14
Tells how strong or weak an acid or a base is
Neutral= pH 7
AcidpH7

Question 13

Acid + Base=

Answer 13

Salt and water

Question 14

Hydrochloric acid + sodium hydroxide=

Answer 14

Sodium chloride + water

Question 15

HCL + NaOH = NaCl + H2O

Answer 15

NaCl + H2O

Question 16

Everyday examples of neutralization

Answer 16

• Indigestion tablets are bases which neutralize excess stomach acid
• Lime is a base which neutralizes acid in soil
• Toothpaste is a base which neutralizes acid in the mouth
• wasp stings are basic, neutralized with vinegar and lemon juice
• Nettle, bee and ant stings are acidic, neutralized with toothpaste or baking soda

Question 17

Neutralization experiment name

Answer 17

To titrate Hydrochloric acid (HCl) against sodium hydroxide (NaOH) and prepare a sample of sodium chloride (NaCl)

Question 18

One characteristic of an acid

Answer 18

Sharp, sour taste