Dr Pusey

What do you think an atom is? Can you draw what it looks like?

Learning Outcomes

Explain what the structure of an atom looks like

Recall the definition of an Element and provide examples

Identify and locate elements using the Periodic Table

AtomsAtoms are the “building blocks” of all matter

The Nucleus – this contains neutronsand protons

Electrons – these orbit around the nucleus

ElementsElements are pure substances made up of particles (atoms) of the same type.

These are two atoms of Hydrogen

1 Proton0 Neutrons1 Electron

ElementsElements are pure substances made up of particles (atoms) of the same type.

These are two atoms of Helium

2 Protons2 Neutrons2 Electrons

ElementsWhat makes an element an element is the number of protons

• All Hydrogen atoms have 1 proton• All Helium atoms have 2 protons• All Lithium atoms have 3 protons• All Beryllium atoms have 4 protons• And so on…

Scientists have so far found 118 elements –some of these had to be synthetically created!

How good is your memory? You only need to remember the names and symbols of

these elements

The Periodic Table The arrangement is the same, but the colours and

other bits may be different (yours is black and white!)

The arrangement is specific – we will learn more about this over time

Columns form GROUPS

These groups act similarly to others in the same group.

All of the elements on the very right are extremely stable gases called “Noble gases”.

All of the elements on the very left are the opposite – they are very reactive!

Potassium + Water

Label your Periodic Table

How did you go?

Explain what the structure of an atom looks like

Recall the definition of an Element and provide examples

Identify and locate elements using the Periodic Table