The temperature will remain constant during the change of state.
The melting and freezing point are the same temperature.
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.
Relatively high boiling points
The reactions are less violent than group 1 elements.
very reactive with metals
F2 and Cl2 pale green gases
Br2 red brown liquid
I2 grey solid
non-metal atoms chemically bonded together
Predicting bond type
Metals and non-metals ionic bonds
Non-metals covalent bonds
Reactions of Metals
Metal + Oxygen Metal oxide
Metal + Water Metal hydroxide + Hydrogen
Metal + Acid Metal salt + Hydrogen Gas
revision Cheat Sheet (DRAFT) by lydiamaxwell
This is a draft cheat sheet. It is a work in progress and is not finished yet.