5.2 Making Salts From Metals Or Bases

Question 1

Name two materials whose reactions with acids are too violent to be done safely?

Answer 1

Very reactive metals such as sodium and potassium

Question 2

State the words equation for when metals react with acids

Answer 2

Metal + acid –> a salt + hydrogen

Mash

Question 3

Name a metal that can safely react with an acid to produce a salt

Answer 3

•zinc 
•lead
•tin
•iron 
Etc

Question 4

What type of substance are metal oxides or metal hydroxides?

Answer 4

Bases

Question 5

What is the word equation for neutralisation reactions?

Answer 5

Acid + base –> a salt + water

Question 6

Name 2 reactions that can be used to produce a salt

Answer 6

• MASH

* neutralisation

Question 7

How do insoluble metals or bases react with acids?

Answer 7

1. It is added a little bit at a time to the acid until all of the acid has reacted
2. The mixture is then filtered to remove the excess solid reactant to leave a solution of the salt
3. Evaporate the water from the solution to leave the salt to crystallise

Question 8

Why do we add excess of the base when making a salt?

Answer 8

To neutralise all of the acid

Question 9

What are chillies made from?

Answer 9

Hydrochloric acid

Question 10

What are nitrates made from?

Answer 10

Nitric acid

Question 11

What are sulfates made from?

Answer 11

Sulphuric acid

Question 12

What is the chemical formula of hydrochloric acid?

Answer 12

HCl

Question 13

What is the chemical formula for nitric acid?

Answer 13

HNO3

Question 14

What is the chemical formula for sulphuric acid?

Answer 14

H2SO4

Question 15

What is produced when nitric acid reacts with magnesium?

Answer 15

Magnesium nitrate + hydrogen

Question 16

What is produced when hydrochloric acid reacts with copper hydroxide?

Answer 16

Copper chloride + water

Question 17

What metals will acids react with?

Answer 17

Metals that are above hydrogen in the reactive series