1. Compounds or mixtures.
24/11/2018

2. We are learning Define elements, compounds and mixtures
Classify molecules as elements, compounds or mixtures
Describe how mixtures can be separated
Explain why separating compounds is more difficult than separating mixtures

3. Separation techniques

4. Removing Chlorine from impure rock salt.
Have a look at the equipment we have on the side.
Rock salt contains salt which has a chemical formula of NaCl
How could we remove the salt from the rock salt?
Take a minute to think about how we could remove the Cl from the NaCl.
What is the chemical compound name of NaCl?
How many atoms are present in the compound NaCl?

5. Method Dissolve the rock salt in water 1) Fill in the steps yourself2)
Filter the impurities out
1)Fill in the steps yourself
Place the brine on the front desk for Miss to separate the Cl from the NaCl.

6. Literacy. How are compounds different from mixtures
Element
Atom
Bonding
Electron
Iron
Sulphur
Magnetic
Conduct electricity
Separate

7. Electrolysis of salt water (brine)

8. Showing diagrams of elements, compounds and mixtures

10. 2 mins
Particle Models
What do the diagrams below represent? Choose from:
1 Element A
1 Mixture C
1 Compound B
Mixture of Compounds D
Mixture of Elements and Compounds E A B C D E