Metals and Alloys

Question 1

Describe the bonding in metals?

Answer 1

giant structure of atoms arranged in regular layers

Question 2

What are delocalised electrons?

Answer 2

electrons which are free to move around

Question 3

Define metallic bonding?

Answer 3

strong electrostatic attraction between the sea of delocalised electrons and positive metal ions

Question 4

Why do metals have high melting and boiling points?

Answer 4

takes a lot of energy to overcome the strong metallic bonds

Question 5

Why are metals good conductors of heat and electricity?

Answer 5

contains delocalised electrons which can move and carry charge

Question 6

Why can metals bend and change shape?

Answer 6

layers of atoms can slide over each other

Question 7

What is an alloy?

Answer 7

mixture of metals

Question 8

Why are alloys harder than metals?

Answer 8

different sizes of atoms disrupts the layers so makes if more difficult for the layers to slide over each other