Unit 3: Chemistry In Society

Question 1

Metallic Bond

Answer 1

Force of attraction between the positive metal ions and delocalised electrons.

Question 2

What is the reaction of metal with water ?

Answer 2

Metal + Water —> metal hydroxide + Hydrogen

Question 3

What is the reaction of metal with acid ?

Answer 3

Metal + water —> salt + hydrogen

Question 4

What is the reaction of metal with Oxygen ?

Answer 4

metal + Oxygen –> metal oxide

Question 5

What metals do you extract using Electrolysis ?

Answer 5

Potassium, Sodium, Lithium, Calcium, Magnesium, Aluminium

Question 6

What metals do you extract using Carbon ?

Answer 6

Zinc, Iron, Nickel, Tin, Lead, Hydrogen and Copper

Question 7

What metals to you extract using only heat ?

Answer 7

Mercury, Silver, Gold, Platinum.

Question 8

Electrolysis

Answer 8

Splitting up of an Ionic compound using electricity

Question 9

What is a polymer made of ?

Answer 9

Monomers

Question 10

Fertilisers

Answer 10

Substance which replace essential elements require for healthy plant growth

Question 11

What catalyst is used for the Haber Process ?

Answer 11

Iron

Question 12

What catalyst is used for the Ostwald process ?

Answer 12

Platinum

Question 13

What are the three types of radiation ?

Answer 13

Alpha, Beta and Gamma

Question 14

What is the half life ?

Answer 14

Time it takes for the activity of a radioactive material to half.