revision Cheat Sheet (DRAFT) by lydiamaxwell

The temper­ature will remain constant during the change of state.
The melting and freezing point are the same temper­ature.

Homoge­neous mixtures
Hetero­geneous mixtures

Alkali
Silver­y-white coloured
Metals
Relatively low boiling points

They react with water to produce hydrogen gas and heat.
The heat produced can ignite (burn) the hydrogen gas produced.
As you move down the group, the reactions become more violent.

Alkaline
Relatively high boiling points
The reactions are less violent than group 1 elements.

Halogens
diatomic
very reactive with metals
F2 and Cl2 pale green gases
Br2 red brown liquid
I2 grey solid

nobel gases
unreactive

non-metal atoms chemically bonded together

Metals and non-metals ionic bonds
Non-metals covalent bonds

Metal + Oxygen Metal oxide
Metal + Water Metal hydroxide + Hydrogen
Metal + Acid Metal salt + Hydrogen Gas