Plastics & Fertilisers - Unit 3

Question 1

How are polymers made?

Answer 1

by adding monomers together

Question 2

How can a polymer be named?

Answer 2

by adding “poly” before the monomers name

Question 3

What is the name given to a chemical reaction in which unsaturated monomers join together?

Answer 3

Addition polymerisation

Question 4

What three nutrients do plants need to grow?

Answer 4

Potassium, Phosphorus, Nitrate

Question 5

Why must the fertilisers be soluble?

Answer 5

As the plants take in the elements through the soil form their roots

Question 6

What are the two common fertilisers used?

Answer 6

Ammonia (NH3) ,Nitric Acid (HNO3)

Question 7

What are the properties of ammonia?

Answer 7

pungent, clear, colorless, soluble, alkali

Question 8

What process is used to make ammonia ?

Answer 8

Haber Process

Question 9

What are the two starting elements for the haber process ?

Answer 9

Nitrogen and Hydrogen

Question 10

What catalyst is used in the Haber process ?

Answer 10

Iron catalyst

Question 11

What does a double arrow in an equation mean?

Answer 11

That the equation is reversible

Question 12

What is done to increase the yield of ammonia in the Haber process?

Answer 12

high pressure and moderately high temperature

Question 13

What is the process called that makes nitric acid?

Answer 13

Ostwald process

Question 14

what are the two starting elements of the ostwald process

Answer 14

Ammonia and Oxygen

Question 15

What is the catalyst used in the ostwald process

Answer 15

Platinum

Question 16

Is the ostwald process exothermic or endothermic?

Answer 16

Exothermic