1.5 - Metals

Question 1

Compare the sizes of the atoms in a metallic element

Answer 1

They are all the same size

Question 2

How are the atoms arranged in a metal? (4)

Answer 2

• they form giant structures
• in which layers of atoms are
• arranged in regular patterns
• closely packed together

Question 3

How can you make a model of a metal structure?

Answer 3

By putting lots of small same-sized spheres like marbles together

Question 4

How can you make a model of a metallic bond?

Answer 4

Maltesers with the chocolate around the outside melted (don’t use this in the exam - just for memory!)

Question 5

Describe metallic bonding (4)

Answer 5

• When metals pack together, the electrons in the highest energy level delocalise
• They move freely between atoms
• This produces a lattice of positive ions in a ‘sea’ of moving, delocalised electrons
• The strong electrostatic forces between the positively charged metal ions and delocalised electrons hold the giant structures together