Ways of Separating Mixtures in Sci .pptx

There are six ways to separate mixtures including sedimentation, decantation, filtration, evaporation, crystallization and distillation. Mixtures are made up of both solids and liquids. Mixtures that contain only solids must be separated through sublimation, extraction, magnetic separation or chromatography.It is important to be able to separate mixtures to obtain a desired component from the mixture and to be able to better understand how each component contributes to the properties, chemical and physical, of the resulting mixture.It is important to be able to separate mixtures to obtain a desired component from the mixture and to be able to better understand how each component contributes to the properties, chemical and physical, of the resulting mixture.It is important to be able to separate mixtures to obtain a desired component from the mixture and to be able to better understand how each component contributes to the properties, chemical and physical, of the resulting mixture.

1. Aim: How to separate mixtures DO Now: explain the difference between a compound and a mixture. Give one example of a compound and one example of a mixture Homework: On a separate sheet, pick one separation method, explain the process, and include drawing.

2. Matter Pure Substance Mixtures Elements Compounds Homogeneous Heterogeneous

3. What is the difference between a Homogeneous and a Heterogeneous Mixture? Homogeneous Heterogeneous

4. Vocab Miscible – Capable of being mixed Immiscible – Cannot be mixed Soluble – able to be dissolved Insoluble – unable to be dissolved

5. What is a Solution? A Solution is another word for homogeneous mixture Parts of a solution solvent solute Solvent dissolves the solute; solute is what is being dissolved .

6. What is an Aqueous Solution? An aqueous solution is a solution in which water is the solvent ( a substance is dissolved in water) Created by dissolving substance in water ( aq ) next to a substance means dissolved in water. Ex: NaCl ( aq ) means NaCl (table salt) is dissolved in water forming salt water

7. Methods to separating Mixtures Mixtures are separated by physical means using differences in physical properties Examples of physical properties: density, melting and boiling point, solubility On the following slides, we will investigate three methods to separating mixtures For each method you will Turn to you partner, discuss and write down what you see and explain how you think the separation occurs

8. filtration Filtration  is a separation method used to separate out pure substances in mixtures Made up of particles some of which are too large enough in size to pass through the filter

9. Common Use of Filters Air conditioners have filters that allow the air to pass through while trapping solids such as lint and dust

10. Distillation Water Boils at 100 o C Ethanol boils at 74.4 o C distillation is a procedure by which a solid and a liquid, or two liquids with different boiling points can be separated . Uses the process of evaporation and condensation.

11. Common Use of Distillation Gasoline is obtained from crude oil by the process of distillation

12. Chromatography The components in the mixture have different attractions with the chromatography paper; therefore, the different components travel up the paper at different rates.

13. Common uses of Chromatography Well, in real life, gas chromatography is often used to investigate criminal cases like the ones featured on those shows. This can take the form of crime scene testing (the analysis of blood or cloth samples), arson verification (identifying the chemicals responsible for a fire to see whether there was foul play) or blood testing after death to determine levels of alcohol, drugs or poisonous substances in the body

14. Summary: Name the techniques which are suitable for separating the following mixture:   Situation Separation Technique a. To obtain drinking water from muddy water   b. To separate gasoline from crude oil   c. To remove leaves from a swimming pool   d. To obtain pure sugar from a solution   e. To determine whether the coloring in a fruit juice is a single substance or a mixture of colored substance