1. Separation of mixtures By Dr. Chirie Sumanasekera
Chapter: 3
Properties of Matter:
Separation of mixtures
By Dr. Chirie Sumanasekera
9/24/2018

2. ANONCEMENTS
Ch-1: Retake was today at FLEX room during PLT
If you missed the 9/21 Ch-2 Summative TEST, you have until the end of the week to take it. Come see me.

4. Separation of Mixtures
Physical
Separation of Mixtures

5. Ways of separating Mixtures:
1. Filtration: Separation of solid or liquid particles based on size through a membrane or filter (filtering coffee or pasta with a colander)
2. Distillation: Used for separating homogeneous compounds in liquid mixtures based on differing boiling points of individual components (Petroleum and alcohol manufacture)
3. Crystallization: Using a super saturated solution to separate one component as an extremely pure solid in crystal form (salt extraction from sea water)
4. Chromatography: A way to separate a mixture of solid or gas particles dissolved in a liquid based on differing mobilities of individual particles (Pigments of a black sharpie pen)
5. Sublimation: A way to separate a mixture of solid by heat causing one to be removed as a gas [ex: a mixture of ice and dry ice (solid CO2)]

6. Definitions
SOLUTE: a substance that is dissolved in a liquid (solvent)
SOLVENT: a substance that dissolves a solute resulting in a solution
Liquid SOLUTION: Is a homogeneous mixture between a solute and a solvent
QUESTION: If Salt is dissolved in water:
What is the SOLUTE?
What is the SOLVENT
What is the SOLUTION?
Salt
Water
Water and salt solution

7. 1. Filtration
Filtrate
Mixture
Membrane (Filter paper)
Funnel
Solid (Pulp)
(RETENTATE)
USE: to separate an insoluble solid from a liquid by passing the mixture through a membrane

8. Distillation: 2.
USE: to separate homogeneous liquid mixtures based on differences in boiling point

9. Evaporation 3.
Use: to separate a solute from a solvent by evaporating out the solvent. Solute remains in container at the end, as a solid.

10. Chromatography: 4.
USE: separate a mixture of solid or gas particles dissolved in a liquid based on differing mobilities of individual particles (Pigments of a black sharpie pen)