Neutralisation

Question 1

What is the definition of neutralisation?

Answer 1

When an acid reacts to an alkali to produce a neutral solution of a salt and water - acid + alkali —> salt + water

Question 2

When we use the following acids name the salt that is formed.
Hydrochloric acid -
Sulphuric acid -
Nitric acid -

Answer 2

Chloride
Sulphate
Nitrate

Question 3

Are the following a base or an alkali?
Sodium hydroxide - 
Calcium oxide - 
Magnesium hydroxide - 
Lithium oxide - 
Copper oxide -

Answer 3

Base
Alkali
Base
Base
Base

Question 4

Plants grow best at…

Chemicals like… added to neutralise ph

Answer 4

Ph7

Lime

Question 5

Indigestion - hydrochloric acid in our stomach - too much acid.
Use a… to neutralise.

Answer 5

Base (indigestion tablet)

Question 6

Insect stings - bee sting is… - neutralise with…

Answer 6

Acidic

Alkali eg. Baking soda

Question 7

Wasp sting is… - neutralise with…

Answer 7

Alkaline

Acid eg. Vinegar

Question 8

Acid + metal = ______
Acid + alkali = ______
Acid + base = ______
Acid + metal carbonate = ______

Answer 8

Salt + hydrogen
Salt + water
Salt + water
Salt + water + carbon dioxide

Question 9

Potassium + sulfuric acid =

Answer 9

Potassium sulphate + water

Question 10

Hydrochloric acid + sodium oxide =

Answer 10

Sodium chloride + water

Question 11

Copper carbonate + sulfuric acid =

Answer 11

Copper sulphate + water + carbon dioxide

Question 12

Zinc + nitric acid =

Answer 12

Zinc nitrate + hydrogen

Question 13

Copper oxide + sulfuric acid =

Answer 13

Copper sulphate + salt + water

Question 14

What colour does red litmus paper turn in…
Hydrochloric acid
Water
Sodium hydroxide

Answer 14

Red
Red
Blue

Question 15

What colour does blue litmus paper turn in…
Hydrochloric acid
Water
Sodium hydroxide

Answer 15

Red
Blue
Blue

Question 16

What colour does universal indicator solution turn in..
Hydrochloric acid
Water
Sodium hydroxide

Answer 16

Red
Green
Purple

Question 17

What colour does method orange turn when out in…
Hydrochloric acid
Water
Sodium hydroxide

Answer 17

Red
Orange
Yellow-orange

Question 18

What colour does screened methyl orange turn in…
Hydrochloric acid
Water
Sodium hydroxide

Answer 18

Orange-red
Green
Green

Question 19

What colour does phenolphthalein turn when out in…
Hydrochloric acid
Water
Sodium hydroxide

Answer 19

Colourless
Colourless
Pink

Question 20

Look at pg six of booklet

Answer 20

…

Question 21

Hydrochloride acid + potassium hydroxide =

Answer 21

Potassium chloride + acid

Question 22

Sulfuric acid + potassium hydroxide =

Answer 22

Potassium sulphate + acid

Question 23

Hydrochloric acid + calcium carbonate =

Answer 23

Calcium chloride + acid

Question 24

Hydrochloric acid + zinc =

Answer 24

Zinc chloride + hydrogen

Question 25

What’s the is general equation for the reaction between an acid and a metal

Answer 25

Acid + metal = salt + water

Question 26

How is indigestion caused?

Answer 26

Caused by stomach acid coming into contact with the sensitive, protective lining of the digestive system

Question 27

What salt is used when magnesium oxide is used to neutralise stomach acid?

Answer 27

Chloride salt

Question 28

What type of chemical is copper oxide?

Answer 28

Base

Question 29

Sulfuric acid + copper oxide =

Answer 29

Copper sulfate + water