Download Elements

Elements
Aluminium (Al)
https://www.youtube.com/watch?v=kzAN5f0m5H4
What is an Element?
❖ It is a pure substance that cannot be
separated into simpler substances by
physical or chemical means.
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.
Only one type of Particle
 Elements are Pure Substances.
 A Pure Substance is a substance in which
there is only one type of particle.
 Elements contain only one type of particle:
ATOMS.
Meteorite….
Travels more than 400 million Km
to reach Earth
Meterorite
https://www.youtube.com/watch?v=dBvotWfR3j4
Work with your Coursebook

Go to the pg. 80 and
solve the questions
1&2
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.
Elements on Earth
Solve the Worksheet
Worksheet 7.5A Compounds and
formulae
