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Episode 4
Task 2 -observation
Task 2 -observation
Look at the diagrams W,X,Y and Z below. The show the diffefrent ways that atoms can be arranged. On your companion sheet write down what you see in each diagram. Just say what you see, do not try and explain just yet.
key facts
key facts
Elements - Sometimes called 'pure substances' are made of one single type of atom only. For example, Gold is made from millions and millions of gold atoms all joined together.
Compounds - These are made in reactions. Two or more different types of atom are bonded together to form a new compound. This new compound has different properties to either of its elemental parents. For example Iron Oxide is made of iron atoms joined to oxygen atoms to form molecules. Iron is a silver metal and oxygen is a colourless gas, however iron oxide is a reddish brown powder.
Mixtures - Different elements and compound molecules are mixed together in the same place, but are not chemically joined together. These can easily be seperated.
task 3 - show understanding
task 3 - show understanding
Make sure that you read the the KEY FACTS above. The on your companion sheet decide whether the atom diagrams show an element, compound or mixture.
Task 4 - Demonstrate
Task 4 - Demonstrate
Answer the questions about this diagram on the companion sheet
Task 5 - Naming compounds
Task 5 - Naming compounds
Read the information below and then name the compounds on the companion sheet
Read the information below and then name the compounds on the companion sheet
When 2 things react together it forms a new compound. The things that react are called reactants and the now compound made is a product. Remember, reactants make products.
Naming compounds - THE RULES
Naming compounds - THE RULES
When two elements combine, the ending is usually ---ide.
If the compound contains… The compound name ends in…
Chlorine Chloride
Oxygen Oxide
Sulphur Sulphide
For example, HBr is Hydrogen Bromide
When three or more different elements combine, and one of them is Oxygen, the ending is usually ---ate.
If the compound contains… The compound name ends in…
X , Carbon and Oxygen x, Carbonate
X, Sulphur and Oxygen x, Sulphate
X, Nitrogen and Oxygen x, Nitrate
For example: CuSO4 is Copper Sulphate
Task 6 - Bringing it together
Task 6 - Bringing it together
Answer all the questions in task 6 of the companion sheet to consolidate you knowledge and keep it safe and secure.
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