IQ: Identify the following as colloid, suspension or solution: a. Air b. Raisins in milk c. Tea d. Whipped cream 1

2 B. Separation of Mixtures

 1. Property:.  a. Method: - When the mixture is made up of substances that are different sizes, the smaller particles will pass through the and the bigger ones will be left behind. Ex. a mixture of sand and.  b. Method: -if the particles are big enough, they may by separated by hand especially if they are different colored. Ex. Marshmallows and. 3 Based upon the of the ingredients, mixtures can be separated into pure substances by various means.

2. Property:. a. Method: - A mixture, mixture of an insoluble solid and a liquid, or two solids; 1 soluble and the other not. The _________ substance is left on the _________ paper. The soluble substance can be retrieved by _____________ the liquid. Ex. _______, _______ and ______

b. Distillation- Simple distillation to remove a soluble ______ from a _________, involves vaporization and ____________. This is used when we want the liquid back as well. Ex. Salt and water, sugar and water. ______________ distillation- 2 ___________ with different boiling pts. One boils before other and is collected first.

3. Property: (iron, nickel, cobalt)  Method: Using a magnet- to remove a magnetic substance from a non magnetic substance. Ex. a mixture of and. 6

 How would you separate a mixture of sand, salt and iron filings, step by step. (should be about 5 steps) 7

 4a. Property: and immiscibility (inability to mix) of 2 or more liquids  Method: funnel– to separate mixtures of immiscible (don’t mix) liquids with different. Ex. water and. 8

 4b. Property: (two or more solids)  Method: - To separate a heterogeneous mixture where dense components and less ones float in a liquid without dissolving. Ex. a mixture of different forms of, or a mixture of rocks and. 9

 4c. Property: (miscible substances)  Method: – To separate mixtures according to the densities of the components. mixtures can be separated this way. Ex.. 10

5. Property:. Method: -Separates the different dyes by density. Ex. Paint, colored. 11

12 B. Separation of Mixtures

 1. Property: Size  a. Method: Sifting- When the mixture is made up of substances that are different sizes, the smaller particles will pass through the sifter and the bigger ones will be left behind. Ex. a mixture of sand and gravel.  b. Method: By hand- if the particles are big enough, they may by separated by hand especially if they are different colored. Ex. Marshmallows and chocolate chips. 13 Based upon the properties of the ingredients, mixtures can be separated into pure substances by various means.

2. Property: Solubility a. Method: Filtration- A suspension mixture, mixture of an insoluble solid and a liquid, or two solids; 1 soluble and the other not. The insoluble substance is left on the filter paper. The soluble substance can be retrieved by evaporating the liquid. Ex. Sand, salt and water

b. Distillation- Simple distillation to remove a soluble solid from a liquid, involves vaporization and condensation. This is used when we want the liquid back as well. Ex. Salt and water, sugar and water. Fractional distillation- 2 liquids with different boiling pts.

3. Property: Magnetism (iron, nickel, cobalt)  Method: Using a magnet- to remove a magnetic substance from a non magnetic substance. Ex. a mixture of iron and salt. 16

 How would you separate a mixture of sand, salt and iron filings, step by step. (should be about 5 steps) 17

 4a. Property: Density and immiscibility (inability to mix) of 2 or more liquids  Method: Separating funnel– to separate mixtures of immiscible liquids with different densities. Ex. water and petroleum. 18

 4b. Property: Density (two or more solids)  Method: Flotation- To separate a heterogeneous mixture where dense components sink and less dense ones float in a liquid without dissolving. Ex. a mixture of different forms of plastic, or a mixture of rocks and wood chips. 19

 4c. Property: Density (miscible substances)  Method: Centrifugation– To separate mixtures according to the densities of the components. Colloidal mixtures can be separated this way. Ex. blood. 20

5. Property: Density of dye Method: Chromatography Separates the different color dyes by density. Ex. Paint, colored candy. 21

 IQ: Arrange the following words on a concept map:  Matter, solutions, pure substances, compounds, suspensions, homogeneous, colloids, heterogeneous, mixtures, elements. 22

OQ: Which of the following properties cannot be used to separate a mixture with two or more components? a. Density b. Color c. Mass d. Boiling pt. 23

OQ: Chromatography can be used to solve crimes. Think and write down a crime scene scenario where chromatography may be used. 24

IQ: Which of the following is NOT a pure substance? a. Mercury b. DNA c. Rain water d. Oxygen 25

 OQ: Give two reasons why the gas produced could not be CO 2. 26

 IQ: You have a beaker with an unknown substance which is opaque and brown in color. When left untouched there is no change in the clarity or color of the substance. It is most likely a  A. heterogeneous mixture  B. solution  C. suspension  D. colloid 27

 OQ: 28