7.2

Tell the person next to you…

·         The names of 3 subatomic particles

·         What properties do they have?

atomic structure - electrons orbiting the nucleus.swf Download this file

sub-atomic particles - drag and drop.swf Download this file

·         7.2 describe the structure of an atom in terms of protons, neutrons and electrons and use symbols such as ¹⁴₆C to describe particular nuclei

Proton number and mass number.ppt Download this file

atomic structure of Li - mass and proton numbers.swf Download this file