What to do… Write in your agenda: Open to page 34 in your note packet Study Guide due Monday Open to page 34 in your note packet Answer the following in the Think About It… What kind of mixtures can you think of that are used in every day life?

Standard: SPI 9.4-Differentiate between a mixture and a compound Mixtures Standard: SPI 9.4-Differentiate between a mixture and a compound

Mixtures The kinds of matter in a mixture can be present in varying amounts. Each part of a mixture keeps its own properties.

Mixtures Mixtures are physically combined not chemically so they can be separated using physical means. Mixtures can be evenly or unevenly mixed.

Mixtures Mixtures can be mixed evenly: homogeneous Mixtures can be mixed unevenly: heterogeneous

Solutions A mixture in which the particles of one substance are evenly mixed with the particles of another substance. Solutions can be liquid, gas or solid.

Breakdown of a Solution All solutions are made when one substance dissolves in another substance. SOLUTE = The part that dissolves. SOLVENT = What the solute dissolves in. Usually present in a greater amount.

Breakdown of a Solution Soluble The ability of a substance to dissolve. Soluble: Measured by a substance's solubility – how much of a substance will dissolve in 100g of water at a given temp.

Breakdown of a Solution Insoluble All substances that do not dissolve in water. Concentration of a solution Dilute Solution = Contains a small amount of solute vs. the amount of solvent present.

Breakdown of a Solution Concentrated solution = one containing a large amount of solute compared with the amount of solvent present. Considered strong! Unsaturated solution = Contains less dissolved solute that it can hold at a given temperature.

Breakdown of a Solution Saturated solution = Contains all the solute it can hold at a given temperature. Supersaturated solution = A solution holding more solute than it could normally hold at a given temperature.

Suspensions A mixture of two or more materials that separate on standing. They are temporary and will separate into layers.

Suspensions Properties of Suspensions The particles of a suspension scatter light They are cloudy They settle on standing The particles can be seen.

Suspensions Colloid A suspension in which the particles are permanently suspended. The particles do not settle out The particles are constantly bumping into the surrounding material keeping it from settling.

Examples of colloids Aerosols: Man-made: Aerosol sprays, insecticide spray, smog. Natural: Fog, clouds. Solid aerosol: Natural: Smoke, dust. Foam: Man-made: Shaving lather, whipped cream. Emulsions: Man-made: Mayonnaise, cosmetic lotion, lubricants. Natural: Milk. Sols: Man-made: Paint, ink, detergents, rubber (a latex - also occur naturally). Solid foams: Man-made: Marshmallow, styrofoam, insulation, cushioning. Gels: Man-made: Butter, jelly. Solid sols: Man-made: Certain alloys. Natural: Pearl, opal

Match ‘em up! a. solute b. suspension c. solution d. solubility substance that dissolves in a solvent ability of one substance to dissolve in another at a given temperature and pressure mixture in which particles of a material are more or less evenly dispersed throughout a liquid or gas mixture consisting of tiny particles that are constantly in motion and do not settle out a.  solute b.  suspension c.  solution d.  solubility

Types of Mixtures

DO! Answer the following questions based on the previous lessons: True or False: Examples of mixtures include sand, salad, trail mix, and a mixture of sugar and iron filings Mixtures are usually easy to and can often be done by picking the ingredients out by hand. Can you separate mixtures using the physical properties of substances? Give an example. separate Yes, cereal and raisins

Kool-aid mixing with water True or False: In a mixture, each kind of matter keeps its own physical properties. When a substance mixes completely with another substance to form a solution it is said to   A is a type of mixture in which particles of the two substances are evenly mixed; some of the physical properties change. A solution is a combination of two or more kinds of matter where one substance dissolves in another and there can be changes in the physical properties. Give an example dissolve Homogeneous solution Kool-aid mixing with water

A solution is a special kind of . True or False: Examples of solutions are saltwater, chocolate milk, Kool Aid, brass, and air Solutions can be separated but are usually a little to separate than mixtures. Can you separate solutions using the physical properties of substances? mixture harder Yes, salt and water

Keys to Understanding Write at least 3 sentences Summarize the notes in your OWN WORDS Explain the main ideas from the lesson