Acid And Bases

Question 1

Base Examples

Answer 1

• Sodium hydroxide
• Wasp sting
• Ammonia in bleach

Question 2

Litmus paper

Answer 2

An indicator of acids and bases which is red in acids and blue in bases.

Question 3

Neutral

Answer 3

No colour change = 0

Salt, water and sugar

Question 4

0-6

Answer 4

Acidic

Question 5

7

Answer 5

Neutral

Question 6

8-14

Answer 6

Base

Question 7

PH

Answer 7

Tells how acidic or basic a substance is

Question 8

Neutralisation

Answer 8

The reaction between an acid and a base to produce salt and water.

Question 9

Acid and zinc

Answer 9

Produces salt and hydrogen

Burns with a loud popping sound

Question 10

Hydrochloric acid and zinc

Answer 10

Zinc and hydrochloric acid —> hydrogen and zinc chloride. Zn + 2HCl —> H2 + ZnCl

Question 11

Neutralisation Equation

Answer 11

Sodium Hydroxide + Hydrochloric acid —> Sodium Chloride + Water
NaOH + 2HCl —> NaCl + H2O

Question 12

Acids Examples

Answer 12

• Carbonic acid in fizzy drinks
• Lactic acid in milk
• Citrus acid in lemon juice
• Bee sting
• Hydrochloric acid in stomach

Question 13

An Indicator

Answer 13

Shows by means of colour change whether a substance is acidic or basic
-Litmus paper, methyl orange, universal indicator

Question 14

How to make indicators

Answer 14

It can be made from flowers, vegetables and fruits