1. What are compounds? Learning objectives:
Explain what is meant by compounds
Recognise how compounds form
Understand how elements form compounds
Starter:
Make two lists
1 Mixtures
2 Elements
Fill in as many mixtures and elements you know

2. Can you describe what a compound is?
What is an element??
What is a mixture?
Can you describe what a compound is?

3. Atoms in elements and compounds
Elements are materials made up of one type of atom only.
The element, hydrogen, exists as molecules.
Each hydrogen molecule is made up of two hydrogen atoms joined together. H
Compounds contain two or more different types of atom.
The compound, water, exists as molecules.
Each water molecule consists of two hydrogen atoms joined to one oxygen atom.

4. Properties of a compound – carbon dioxide
A compound has different properties to the elements from which it is made because the atoms are joined differently.
carbon
oxygen
carbon dioxide +
Black solid used as fuel.
Colourless gas in which many substances burn.
Colourless gas used in fizzy drinks and fire extinguishers. + + O C

5. A compound is not a mixture
The atoms in a mixture of hydrogen gas and oxygen
gas, which have not reacted
with each other, look like this…
The atoms in water, the compound made when hydrogen and oxygen react and their atoms become chemically joined to each other, look like this…

6. Making compounds by heating mixtures
Practical:
Making compounds by heating mixtures
Watch the demo carefully- think of the safety points

7. List all the safety points

8. Element 1 Iron Magnesium Copper Element 2 Oxygen ________ Sulphur
We can make compounds from elements
The name of the compound can tell us what elements have combined
Element 1
Iron
Magnesium
Copper
Element 2
Oxygen
________
Sulphur
Compound
Iron Oxide
Magnesium Oxide
Copper Sulp______

9. Method: Light a Bunsen burner and use a blue flame.
Using a metal spatula drop a few drops of iron into the top of the flame.
Using tongs, burmn1cm piece of magnesium in the flame. Safety: do not look directly at the burning magnesium.
Complete the table.
Number
Name of compound
Any changes you saw 1
Iron oxide 2
Magnesium oxide

10. Word splat Write down any keyword from the topic
Write a question that the key word is the answer
Word splat