Distillation Today you will learn About distillation Distillation

Distillation

Today you will learn • About distillation • Distillation apparatus • Useful terminology referring to separation methods 2

„Never delay kissing a pretty girl or opening a bottle of whiskey. “ E. Hemingway • What do you know about the production of whisky? • What is whisky? How is it made? Can you make it at home? • What separation techniques do you know? 3

Label the pictures with the parts of a distillation apparatus. Thermometer Tripod stand Condenser Erlenmeyer flask Boiling point Distillation flask 4

Distillation is a process that can be used to separate a pure liquid from a mixture of liquids. It works when the liquids have different boiling points. Distillation is commonly used to separate ethanol - the alcohol in alcoholic drinks from water. Another use is crude oil processing.

Distillation process to separate ethanol from water Step 1 - water and ethanol solution are heated 5

Step 2 - the ethanol evaporates first, cools, then condenses

Step 3 - the water left evaporates, cools, then condenses

Put the events in the correct order coo ling conde g nsing in t a or heating p a v e

Fill in the gaps with the correct words The mixture is 1. . in a flask. Ethanol has a lower 2. . than water so it evaporates first. The ethanol 3. . is then cooled and condensed inside the 4. . to form a pure liquid. The 5. . shows the boiling point of the pure ethanol 6. . . When all the ethanol has evaporated from the solution, the temperature rises and the water 7. . . evaporates heated boiling point liquid vapour condenser thermometer

Video links https: //www. youtube. com/watch? v=8 v 80 BQN-6 r 8 https: //www. youtube. com/watch? v=xx. Nf. JLMNS 4 E

Task Distillation is one of the most common separation methods. 1) Choose one from this list of separation techniques and describe it in detail. or 2) Compare the following methods, their equipment, uses, properties of mixtures, . . . • Separating funnel • Magnetism • Paper Chromatography • Filtration 6

Useful links: www. ehow. com www. wikihow. com www. bbc. co. uk/education/subjects/zrkw 2 hv www. eschooltoday. com 7

You may need the following terminology • • Funnel Mixture Filtrate Residue Filter paper Solvent Absorb Iron filings • • Attract Surface (Im)miscible liquids Beaker Density Settle Dissolve Magnetic properties 8

Useful language • This method is best for. . . • This is called. . . • For example, . . . • It works like this • Turn into • It causes x to turn into y • The process continues until • Similar to. . . • It is best for • To be applied to. . . • Unlike • One ot the drawbacks is. . . • This has the (dis) advantage of. . . • This has the effect of. . . • If we. . . , then it will. . . • In order to do this, we need to. . . • Firstly, secondly, thirdly, • Then, after that, finally. . . 9

How will your work be assesed? • Clarity • Resourcefulness • Originality • Effective use of language 10

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