All matter is made of atoms that are composed of protons, neutrons and electrons; natural radioactivity arises from the decay of nuclei in atoms (ACSSU177). Atoms make up everything. The geological formations that contain oil and gas also consist of naturally occurring radioactive materials. Elements are combined to…

The atomic structure and properties of elements are used to organise them in the Periodic Table (ACSSU186)Different types of chemical reactions are used to produce a range of products and can occur at different rates (ACSSU187) Metals and fuels are some of the key building blocks for an advancing…