Exam 1 review Lockett Precepts-1

Exam 1 review Lockett Precepts-1 - Review: EXAM 1 These are...

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Unformatted text preview: Review: EXAM 1 These are from Dr. Locketts TAs. you may have some problem with animations if you dont have Quicktime. Use what you can. Dr.W INTENSIVE vs. EXTENSIVE Properties Intensive properties DO NOT depend on the amount of material CHARACTERISTIC of a material Extensive properties Depend on the amount of material Independent of the type or identity of the material INTENSIVE or EXTENSIVE? Boiling Point Molar Mass Density Volume Area Mass Melting Point Color Length Surface Area INTENSIVE or EXTENSIVE? Boiling Point intensive Molar Mass intensive Density intensive Volume extensive Mass extensive Melting Point intensive Color intensive Length extensive Surface Area What about density?! When 2 extensive properties are divided, the result is an intensive property. D=m/v INTENSIV E EXTENSIV E EXTENSIVE Multiple Choice Problems Which of the following is an extensive property of a smoothie? A) total mL of milk B) density of smoothie C) color D) boiling point E) percent sugar Multiple Choice Problems Which of the following is an extensive property of a smoothie? A) total mL of milk B) density of smoothie C) color D) boiling point E) percent sugar Multiple Choice Problems Which is an intensive property of a glass of water? A) number of oxygen atoms B) density of the water C) surface area D) mass Multiple Choice Problems Which is an intensive property of a glass of water? A) number of oxygen atoms B) density of the water C) surface area D) mass Separation Methods Distillation : separation based on difference in boiling point Ex) Distillation of fermented solutions is used to produce distilled beverages with a higher alcohol content. Separation Methods Extraction : separation based on differences in solubility . Ex) Acid extraction is suitable to treat soils contaminated with heavy metals. Separation Methods Filtration : separation based on differences in the size of particles. Ex) Used in chemical synthesis to separate solids from liquids. Separation Methods Chromatography : separation of substances based on polarity. different attractions between mobile and stationary phases. Ex) Used in labs to separate pigments Recall: spinach lab Thin Layer Chromatography (TLC) Multiple Choice Problems In the following picture, which is the correct method of separation? A) chromatography B) extraction C) distillation D) filtration T=290K P=1atm Boiling point of water= 100C Boiling point of hexane= 80.7C Boiling point of nitrogen= -196C Multiple Choice Problems In the following picture, which is the correct method of separation?...
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This note was uploaded on 02/05/2011 for the course CHEM 151 taught by Professor Staff during the Fall '08 term at University of Arizona- Tucson.

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Exam 1 review Lockett Precepts-1 - Review: EXAM 1 These are...

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