1. Elements

2. Aluminium (Al) https://www.youtube.com/watch?v=kzAN5f0m5H4

3. What is an Element? ❖ It is a pure substance that cannot be separated into simpler substances by physical or chemical means.

4. Characteristics of an element?  Substance composed of a single kind of atom.  Cannot be broken down by physical or chemical.  Can be composed of individual atoms or of molecules.

6. Only one type of Particle  ElementsPure Substances  Elements are Pure Substances. Pure Substance  A Pure Substance is a substance in which there is only one type of particle. ATOMS.  Elements contain only one type of particle: ATOMS.

7. Meteorite…. Travels more than 400 million Km to reach Earth

8. Meterorite https://www.youtube.com/watch?v=dBvotWfR3j4

9. Work with your Coursebook  Go to the pg. 80 and solve the questions 1 & 2

10. Atoms joining together  Some substances are made up of individual atoms.  Other substances are made up of little groups of atoms. Molecules are particles made of two or more atoms.joined together.

12. Elements on Earth

13. Solve the Worksheet  Worksheet 7.5A Compounds and formulae