Separating Mixtures

Separating Mixtures

Separating Mixtures Mixing sulphur and iron... ...how could you separate this mixture?

Separating Mixtures

Do not put magnetic directly on iron Hold the magnet below the Petri dish Sulphur + Iron mixture Petri dish Magnet

Separating Mixtures You’re stranded on a desert island surrounded by sea water, sadly your science teacher is lost at sea but luckily all your science equipment has washed up... ...how could you separate a mixture of sand, salt and water to get drinking water?

Goal: to extract clean fresh water Come up with a plan, you will need: A list of equipment A series of steps You should be able to explain your reasoning for each step, use your science knowledge! You have 10 minutes

Ideas and Changes

Separating Mixtures: Filtration filter paper Mixture (salt, sand, water) filter funnel Mixture (salt and water)

Separating Mixtures: Evaporation Water Evaporating dish Mixture (salt and water) Bunsen burner

Separating Mixtures: Distillation What is happening here? Water Vapour Mixture (salt and water) Bunsen burner Water

Separating Mixtures – Solid and Liquid Separate a mixture of sand, copper sulphate and water. Filtration Evaporation

Draw a diagram for filtration and evaporation Separating Mixtures: Solids and Liquids Filtration: method of separating an insoluble solid from a solution

Draw a diagram for filtration and evaporation Separating Mixtures: Solids and Liquids 2. Evaporation: method of separating a soluble solid from a solution

Filtration, Evaporation and Distillation http://www.bbc.co.uk/learningzone/clips/separating-mixtures-of-materials/2295.html

Separating Mixtures - Liquids How could we separate a mixture of water and alcohol? Alcohol boils at 78C Water boils at ? C If you heated a mixture of water and alcohol which would boil first?

Separating Mixtures - Liquids How could we prove we have separated the water and alcohol?

Separating Mixtures: Centrifuging http://www.absorblearning.com/media/attachment.action?quick=ut&att=2208

http://www.tes.co.uk/teaching-resource/Evaporation-and-Condensation-Robinson-Crusoe-Makes-Drinking-Water-6085195/

http://www.bbc.co.uk/schools/ks3bitesize/science/chemical_material_behaviour/compounds_mixtures/activity.shtml