2 Describe and give examples of various types of solutions. Include: suspension, emulsion, colloid, alloy, solute, solvent, soluble, insoluble, miscible, immiscibleAdditional KEY TermsPure MixtureHeterogeneous Homogeneous
4 Suspensions often settle out if left to stand. 1. Heterogeneous mixturesuneven distribution.particles in mixture can be identified.Sand and waterSalt and pepperSuspensionheterogenous mix of solid in liquid.Use filters to separate components.Suspensions often settle out if left to stand.
5 If we let emulsions sit, they will eventually separate too. b. Emulsionheterogeneous mix of two or more liquids.If we let emulsions sit, they will eventually separate too.
6 Larger molecules suspended in liquid c. Colloids / GelsLarger molecules suspended in liquidNot easily filtered and do not settle outAre usually opaque / translucentLight hits particles and doesn’t get through – Tyndall EffectCan look homogenous:Blood, milk, mayonnaise, whip cream, jelly…
7 2. Homogeneous mixturesparticles of are evenly distributed.difficult to separate.Salt or sugar dissolved in watera. Solution - mixture where all substances are distributed as individual molecules or ions.Solutions do NOT settle out.Solutions cannot be filtered.Usually called solutions.
8 (malleability, density, strength and rust resistance) b. Alloyssolutions of two or more metals.mixed to take advantage of specific properties(malleability, density, strength and rust resistance)Steel - iron and carbon (stronger)Brass - copper and zinc (stronger)Bronze - copper and tin (stronger)Stainless steel - steel w/ chromium (no rust)Gold - gold and copper (harder)
9 A solution is made up of solute and solvent. Solvent - substance that does the dissolvingSolute - the dissolved substance.Solutions with water as the solvent are known as aqueous solutions.In a mixture of same states (both liquids), the solvent is the substance present in the larger amount.
10 The terms soluble and insoluble are relative terms. Solubility:The amount of solute that can dissolve in a given volume of solvent to form a solution.Soluble – dissolves in a solvent (solution)Insoluble - does not dissolve (suspension)The terms soluble and insoluble are relative terms.solubleinsolublesolute?
11 Miscible - liquids mix in each other (solution) Immiscible - liquids do not dissolve (emulsion)All gas mixtures of are solutionsAll gas mixtures are homogeneous
13 Ca(NO3)2 (s) ethanol (l)Ionic calcium nitrate is soluble in polar ethanol – this is a homogeneous solution.octane (l) ethanol (l)Nonpolar octane is immiscible in polar ethanol – this is a heterogeneous emulsion.
14 CAN YOU / HAVE YOU?Describe and give examples of various types of solutions.Include: suspension, emulsion, colloid, alloy, solute, solvent, soluble, insoluble, miscible, immiscibleAdditional KEY TermsPure MixtureHeterogeneous Homogeneous