Group 0, group 1, group 7

What are the group 0 elements known as?

The noble gases

In terms of reactivity, the noble gases are…

Unreactive as their outer shells are full

The noble gases have boiling points that are __ than room temperature

Lower

The noble gases’ boiling points __ as you go down the group

Increase

What are the group 1 elements known as?

The alkali metals

What are the four main properties of the alkali metals?

• Soft

• Low density

• Low melting points

• Super reactive, especially with water, oxygen or the halogens

The alkali metals get __ reactive as we go down the group

More

Why do the alkali metals get more reactive as we go down the group?

The radius of the atom gets bigger, meaning that the electron in the outer shell is further from the positive nucleus. This means that the attraction between them is weaker and therefore the electron is lost more easily in a reaction

The alkali metals’ melting and boiling points __ as we go down the group

Decrease

What are the group 7 elements known as?

The halogens

The halogens have 7 electrons in their outer shells, meaning that they form __ bonds with eachother and only exist as molecules.

Covalent

Since the halogens only exist as molecules, this makes them …

Diatomic

The halogens’ melting and boiling points __ as we go down the group

Increase

The size of the halogen molecules __ as you go down the group

Increase

All halogens form __ compounds when they react with other non-metals

Covalent

All halogens form __ compounds when they react with metals

Ionic