1. Definitions Pure Substance Mixture
Element is a substance that is made up of only one type of atom. Eg pure gold, hydrogen gas
Compound is a substance that is made up of two or more different atoms that are joined together by chemical bonds. Eg pure water
Atoms are the simplest form of matter. An atom consists of a single particle of matter
Molecules are made up of two or more atoms joined together by chemical bonds. In molecules the atoms can be all the same or they may be different

2. atom of element:
molecule of element:

3. atom of compound – no such thing!!!
molecule of compound

5. Metals
Non-metals
Good conductors of heat and electricity
Malleable and ductile
Lustrious
Solid at room temperatures (except for mercury)
High densities
Lattice structure

6. Transition Metals
Soft Metals
Only have two of the metals properties
Good conductors of heat and electricity
2) Malleable and ductile
3) Iron, Nickel and Cobalt are magnetic
Only have two of the metals properties
Good conductors of heat and electricity
2) Malleable and ductile

7. Semi-Metals
Nobel Gases
Have properties of both metals and non-metals
Most important for technology, that under special circumstances they can conduct electricity!
Inert gases as they have full outer electron shells