Ionic Bonding (P1)

Question 1

What is an ion?

Answer 1

A charged particle which has either gained or lost electrons

Question 2

What is ionic bonding between?

Answer 2

Metals and non-metals

Question 3

How to draw ionic bonds

Answer 3

You draw the electronic structure of elements, one with circles for electrons and one with crosses. The electrons which have changed elements are still the shape they were before.

Question 4

What do you add once you have drawn ions

Answer 4

You add square brackets at either end and say how many electrons it has gained or lost

Question 5

Are ionic substances solid liquid or gas at room temperature?

Answer 5

Solid

Question 6

Why do giant ionic substances have high melting and boiling points

Answer 6

Because there are lots of bonds in a lattice so it needs a lot of energy

Question 7

Why are giant ionic substances able to conduct electricity when liquid and gas but not solid.

Answer 7

Because the particles are able to move

Question 8

Why are giant ionic substances soluble?

Answer 8

Water is a polar molecule (positive on one side , negative on another) so they have electrostatic forces of attraction where positives and negatives are attracted together

Question 9

Why are giant ionic substances brittle?

Answer 9

Because the ions are alternate charges so the charges which are the same repel

Question 10

Why is graphite softer than diamond?

Answer 10

Because graphite is in layers which have weak inter-molecular forces of attraction

Question 11

Why can graphite conduct electricity

Answer 11

Because it has a delocalised electron which can move freely between layers and can carry energy.