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PROPERTIES intensive, extensive and chemical Objectives • give examples of and characterize intensive, extensive and chemical properties define physical property- any quality that can be observed without changing the composition of the substance physical properties include: melting point, boiling point, color, density, magnetism, crystalline shape, malleability, ductility, luster, and refractive index Physical Properties can be further classified as intensive or extensive define intensive physical property- properties that DO NOT depend on the amount of the matter present define extensive physical property- properties that DO depend on the amount of matter present Intensive or Extensive temperature 25° 25° mass 100.0 grams 10.0 grams freezing point 0° 0° volume 100.0 ml 10.0 ml density 1.00g/ml 1.00g/ml I E I E I define chemical property- a substance’s ability to undergo a chemical reaction chemical properties include: flammability, will oxidize/tarnish when exposed to air, stability, corrosive How can I use information about properties and changes to justify whether a change is physical or chemical? T. O’Toole PRACTICE: identify the following properties as intensive, extensive, or chemical I E I I C granular texture length state of matter density reacts with acid Minute Paper Density is an intensive property in spite of being numerical (quantitative). Density is not measured— it is calculated. When the mass of a substance increases its volume will also—but in a proportional fashion thus always producing a consistent quotient. How do I get from where I am to where I’m going? The 10 Minute Makeover Customize your learning by choosing from the following options each night Complete the appropriate section on the Portfolio Page Complete questions #1-3 on the SYS Assignment Review the PPT file on the website Read pages 29-30 and pages 68-71 in the book Watch the properties video on the chapter page of my website Watch the density video on the chapter page of my website Identify properties using : http://www.quia.com/jg/1162994.html Check out the tutorial resources in the LiveBinder Review the skills from today’s Train Your Brain How can I use information about properties and changes to justify whether a change is physical or chemical? T. O’Toole