Periodic Table

Question 1

Arrangement of the electrons

Answer 1

The electrons move around the nucleus in a series of levels called shells. Each shell can only hold a certain number of electrons. The first level can only contain two electrons. The second level can only contain up to 8 electrons. Same for the third level

Question 2

The further the electrons are from the nucleus….

Answer 2

The energy increases more

Question 3

Elements in the same group have the same number of….

Answer 3

Electrons in their outer shell

Question 4

What does the group number tell you?

Answer 4

The number of electrons in the outer shell

Question 5

What does the period number tell you?

Answer 5

It gives the number of occupied shells.

For example, chlorine is in period 3 and so is using 3 electron shells

Question 6

How are the groups arranged?

Answer 6

The groups are arranged because of the chemical properties. For example, all the elements in Group 1 have similar chemical properties.

Elements in the same group have similar chemical properties and reactions because they have the same number of electrons in their outer shell.

Question 7

Group 0 - Noble Gases

Answer 7

Completely unreactive
They have 8 electrons in their outer shell (except for helium) which makes them very stable and so unreactive as they do not need to lose, gain or share electrons to become stable

Question 8

Properties of metals

Answer 8

Tend to be solids with high melting and boiling points
Have relatively high densities
They are shiny when they are polished or freshly cut
They are malleable (can be hammered into shape)
Ductile (able to be drawn into wires)
Good conductors of heat
Good conductors of electricity

Question 9

Properties of non metals

Answer 9

Tend to have low melting and boiling points
Tend to be brittle when solid
Don’t really have a shine like metals
Don’t usually conduct electricity
Poor conductors of heat