Classification of Matter Basic Classification of Matter Adding

Classification of Matter

Basic Classification of Matter

Adding More Detail to the Basic Classification Scheme FOAM: a substance that is formed by trapping many gas bubbles in a liquid or solid. COLLOID: a type of mixture in which one substance is dispersed evenly throughout another EMULSION: a type of colloid made from two or more immiscible (mix without blending) liquids.

Classification of Colloids Medium / Phases Gas Continuous Liquid medium Solid Dispersed phase Gas Liquid Solid NONE Liquid aerosol (All gases are mutually miscible) Examples: fog, mist, hair sprays Solid aerosol Foam Emulsion Solid foam Gel Solid sol Examples: smoke, cloud, air particulates Example: whipped cream, shaving Examples: milk, mayonnaise, Examples: pigmented cream hand cream ink, blood, paint Examples: aerogel, styrofoam, pumice Examples: agar, gelatin, jelly, silicagel, opal Example: cranberry glass – gold dispersed in glass

DEMONSTRATIONS

Little Miss Muffet, sat on a tuffet, Eating her curds and whey; Along came a spider, who sat down beside her And frightened Miss Muffet away.

Cottage Cheese (Curds and Whey) Whipped Cream Butter Polyurethane

EXPERIMENT

MAKING CHOCOLATE MOUSSE STEPS MATERIALS 1. Everyone needs to wash their hands 1 plastic table cover 1 stainless steel bowl 1 wire whisk 1 measuring cup 2 bars chocolate 1 bottle water 1 pair of gloves 1 hot plate 1 ice bath 2. Cover the work area with the plastic table cover 3. Choose one group member to handle the chocolate – this person should put on the gloves 4. Break the chocolate into small pieces into the bowl 5. Add ½ cup water 6. Place the bowl on the hot plate and stir until all the chocolate is melted and blended with the water 7. Remove from heat, place on ice and take turns vigorously whisking the mixture until a stable foam is formed 8. Sample and taste if you wish