Chemistry

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  • Created by: Tildy
  • Created on: 28-11-11 18:50

Relative atomic mass (R.A.M)

-Each type of atom has a different mass. However the mass of an atom is too small to measure. Protons and neutrons are the heavy particles in an atom, we ignore the tiny mass of electrons. They each have a mass of 1 atomic mass unit, and are found in the nucleus of an atom.

The Periodic Table

(http://www.bbc.co.uk/schools/ks3bitesize/science/images/periodictable_divided.gif)

The periodic table arranges the elements in order of atomic number

groups:

-there are 8 groups

-a group is a vertical column

-elements in a group have similar properties

periods:

-periods are the rows across

metals, non-metals:

-the periodic table is split into a few groups - metals, non-metals and…

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