Topic 5

Question 1

What are the properties of transition metals

Answer 1

High melting point(because of electrostatic forces of attrsction)

Question 2

What is corrosion and how does oxidation apply?

Answer 2

Corrosion= occurs when a metal continues to oxidise gradually becoming weaker over time

Question 3

How can the rusting of iron be prevented (exclusion of oxygen and water)

Answer 3

Painting over iron
Coating iron with plastic
Using oil or grease on iron

Question 4

What is galvanisation and how does it stop rust in iron

Answer 4

Galvanisation = dipping clean iron into molten zinc to apply a coating

Question 5

What type of rust protection is galvanisation and why?

Answer 5

Galvanisation is sacrificial protecting where iron is dipped into a more reactive metal

Therefore the coating rusts protecting the inside

Question 6

What is the arrangement of pure metals

Answer 6

Same size
Regular arrangement
Layers slide over eachother making them soft and malleable