Colloids PDF文件使用"pdfFactory Pro”试用版本创建wm,fineprint..com,cn
Colloids PDF 文件使用 "pdfFactory Pro" 试用版本创建 ÿwww.fineprint.com.cn
What is a Colloid? Solution Suspension homogeneous heterogeneous mixture mixture particles are particles visible, molecules settle out Size<1 nm size >100 nm Colloid size 1-100 nm particles invisible, remain suspended PDF文件使用"pdfFactory Pro”试用版本创建mm,fineprint..com,cn
What is a Colloid? Solution homogeneous mixture particles are molecules Size< 1 nm Suspension heterogeneous mixture particles visible, settle out size >100 nm Colloid size 1-100 nm particles invisible, remain suspended PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.com.cn
Characteristics of Colloids Consist of a continuous phase and a dispersed phase Classified in terms of dispersed substance(solid,liquid, gas)in dispersing medium (solid,liquid,gas) Dispersed phase 1-100 nm particles: Large surface area to volume ratio Size appropriate for scattering light (Tyndall effect) Thermodynamically unstable,so need some way to keep PDF文件使用"pdfFactory Pro”试用版本创建m,fineprint.com,cn
Characteristics of Colloids • Consist of a continuous phase and a dispersed phase • Classified in terms of dispersed substance (solid, liquid, gas) in dispersing medium (solid, liquid, gas) • Dispersed phase 1-100 nm particles: – Large surface area to volume ratio – Size appropriate for scattering light (Tyndall effect) – Thermodynamically unstable, so need some way to keep PDF 文件使用 "pdfFactory Pro" 试用版本创建 ÿwww.fineprint.com.cn
Characteristics of Colloids Very large surface area May have a charged surface Scatter light(Tyndall effect) Classified in terms of dispersed substance(s, 1,g)in dispersing medium (s,1,g) PDF文件使用"pdfFactory Pro”试用版本创建ww.fineprint.com.cn
Characteristics of Colloids • Very large surface area • May have a charged surface • Scatter light (Tyndall effect) • Classified in terms of dispersed substance (s, l, g) in dispersing medium (s, l, g) PDF 文件使用 "pdfFactory Pro" 试用版本创建 ÿwww.fineprint.com.cn
Classification of Colloids Dispersed Dispersing Name of Common Examples Phase Medium Colloidal System Liquid Gas Liguid Aerosol Mist,clouds,fog Solid Gas Aerosol Dust,smoke Gas Liguid Foam Suds,whipped cream Liquid Liquid Emulsion Cream,milk,mayo Solid Liquid Sol Paints,jellies, sewage Gas Solid Solid Foam Marshmallow Liquid Solid Solid Emulsion Butter,cheese Solid Solid Solid Sol Opals,some alloys PDF文件使用"pdfFactory Pro”试用版本创建ww,fineprint.com,c里
Classification of Colloids Dispersed Phase Dispersing Medium Name of Colloidal System Common Examples Liquid Gas Liquid Aerosol Mist, clouds, fog Solid Gas Aerosol Dust, smoke Gas Liquid Foam Suds, whipped cream Liquid Liquid Emulsion Cream, milk, mayo Solid Liquid Sol Paints, jellies, sewage Gas Solid Solid Foam Marshmallow Liquid Solid Solid Emulsion Butter, cheese Solid Solid Solid Sol Opals, some alloys PDF 文件使用 "pdfFactory Pro" 试用版本创建 ÿwww.fineprint.com.cn