Separating Mixtures Chapter 25 Decanting Decanting means to pour off. Decanting is used in panning gold and in pouring water off vegetables.

Slides:

Advertisements

Similar presentations

Separation of Mixtures

Advertisements

Separation Techniques

Separation Techniques

Separations Magnets Settling Decanting Filtering Evaporation

 Red Ink --> Answers  Blue Ink --> Teacher’s Explanation.

Separation Techniques LSS 1 Term 3. Mixtures and Pure Substances Recap: How do we define mixture? A mixture contains two or more constituent substances.

Dissolving and separating solutions

Methods of Purification

Chapter 3: Separation Techniques

Recrystallization Impure benzoic acid

SEPARATION OF SUBSTANCES FROM MIXTURES

TOPIC: Methods of Separating Mixtures Essential Question: What are the different ways of separating mixture? This ppt introduces and reviews ways of separating.

Method 3: Simple Distillation

Simple distillation and fractional distillation

Separation of Mixtures

Separating Mixtures.

Separation and Purification Techniques

Chapter 3: Separation Techniques

Separating Mixtures.

Chapter 19: Separating Mixtures

Methods of Separating Mixtures Grade 9 Science Mixtures can be separated by physical means…

Separating mixtures Mixtures can be easily separated. There are several different methods depending on what is to be separated. Over the next few pages.

1. 2 The Different Separation Techniques are as follows: ~ Magnetic attraction ~ Filtration ~ Evaporation ~ Distillation ~ Chromatography ~ Sublimation.

Separation Techniques QUIZ Questions. Which technique can be used to separate 2 liquids with different boiling points? Distillation 1.

SEPARATION OF SUBSTANCES

© OUP: To be used solely in purchaser’s school or college A pure substance contains just one type of particle. A mixture contains at least two different.

Water and Separating Techniques. Mixtures A mixture of substances can be easily separated The substances are not chemically combined You could separate.

1 st Year Science – Chemistry. Separating Mixtures – Introduction Mixtures: ‘ A mixture is made up of 2 or more substances mingled together but not chemically.

Separating Mixtures Must be a difference in physical properties to separate a mixture.

EQ: What are the different methods of physical separation? SEPARATION OF MATTER NOTES.

SEPARATION METHODS FOR MIXTURES. The key is to find a property that one part of the mixture does have but the other doesn't. This relies on their physical.

CLASSIFICATION OF MATTER and SEPARATION. Classification of Matter.

Separating Mixtures.

What will we learn in this section ● What pure substance is. ● Separating techniques including, (1) Filtration (2) Evaporation (3) Distillation (4) Chromatograpy.

Separation Techniques

Mixtures What is a mixture?

Match the correct description to the separation technique.

Separation Techniques

12/09/2018 Solutions.

Fractional Distillation

Techniques to Separate Matter!!!

Separation Techniques

Mixtures and Solutions

Separation of Mixtures

Distillation SPLAT Lv4: Describe what distillation is.

Separation of mixtures

Separating Substances

Separation of Mixtures

Distillation SPLAT Lv4: Describe what distillation is.

Separation of Mixtures

What is a Mixture? A mixture is combination of different substances, the amount of the parts can vary.

Separating mixtures MARTIN 2011.

18/01/2019 Solutions KRS.

W Richards Worthing High School

27/02/2019 Solutions KRS.

Separation Techniques

SEPARATION OF MIXTURE TECHNIQUES

Year 7 multiple-choice main test: answers 7H Solutions

Recrystallization Impure benzoic acid

Physical Separation Techniques

W Richards Worthing High School

28/04/2019 Solutions.

Separating mixtures.

III.4 THE PHYSICAL SEPARATION OF SUBSTANCES

23/05/2019 Solutions.

Dissolving and separating solutions

States of Matter and Diffusion

Presentation transcript:

Separating Mixtures Chapter 25

Decanting Decanting means to pour off. Decanting is used in panning gold and in pouring water off vegetables.

Separating Solids from Liquids Filtration is the separation of small insoluble solids from a liquid. e.g. sand from water,Chalk from water

Evaporation

To purify Rock Salt(sand and salt) using filtration and evaporation. Step (a) Crush rock salt with pestle and mortar. Step (b) Add crushed rock to warm water. Step (c) Heat water and stir thoroughly.

Step (d) Allow beaker to cool and filter the mixture. Step (e) Heat the salt solution until it starts to “spit”. Step (f) Continue heating the solution over a beaker of boiling water until dry salt remains in the dish.

Distillation Distillation is the process involving the vaporisation of a liquid by boiling it and then condensing the liquid by cooling it. It can be used to separate a soluble solid (e.g. Salt) from a liquid (e.g.seawater) to give a pure sample of each.

Apparatus used to obtain a sample of pure water from seawater(distillation)

Distillation can also be used to separate two miscible liquids such as alcohol and water. It works on the basis that alcohol boils at 78 o C and water boils at 100 o C. The fractionating column helps to give better separation of the Alcohol and the Water

Chromotography Chromatography is a method used to separate a mixture of dissolved substances in a solution.

As the solvent rises up the paper it carries some dyes further up than others. This separates the various dyes from the original sample. Before After

TextbookChapter24-Separating Mixtures A1.Physical. A2. Insoluble. A3. Soluble, solution. A4. Filtration, filter paper. A5. Salt, sugar, evaporation, crystals, clock glass. A6. 78, 100, distillation, Liebig condenser. A7. Distillate. A8. Soluble, solution. A9. Distillation. A10. Chromatography, chromatography paper. A11. Soluble. B1. See Experiment 25.1, p.148. B2. See Experiment 25.3, p.148.

DiscoveringScience-TextbookSolutions28 B3. (a) Distillation. (b) Alcohol has a lower boiling point and there fore evaporates quicker than water does. The alcohol vapour enters the inner tube of the Liebig condenser, the walls of which are kept cold by the water flowing in the outer sleeve of the condenser. This condenses the alcohol vapour into alcohol liquid. (c) So that the outer tube will fill completely with cold tap water. B4. SeeExperiment24.3,p.146. B5. (a) A magnet. (b) Saw dust would float and could be scooped off. (c) Filtration followed by evaporation. (d) Filtration. (e) Evaporation, or distillation to save a sample of water. (f) A magnet.

B6. (a)Sand (b)Ink. (c)Alcohol. (d)Copper sulfate.(e)Salt and water. (f)Sand and water. (g)Alcohol and water. B7. See Experiment 24.1, p.145. B8. (a)Distillation. (b)Alcohol and water. (c)Liebig condenser. (d)Filtration. B9.(a)See Experiment 24.4,p.147. (b)The mixture of coloured inks would separate out and end up at different levels on the chromatography paper. A single coloured ink would only leave one mark on the chromatography paper. B10. (a)(a) Liebig condenser. (b)Y. (c)Pure water, salt. B11.(a)The ink spot moves upwards and the different colours in the ink get separated out at different levels on the chromatography paper. (b)The ink spot would move upwards and only one mark would be left higher up on the chromatography paper.