Ch1(5-8)Aug29Fa08a

Ch1(5-8)Aug29Fa08a - CHEM 109 General Chemistry University...

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Unformatted text preview: CHEM 109 General Chemistry University of Nebraska FALL 2008 Wednesday 27 August 2008 ANNOUNCEMENTS: Register online for Mastering Chemistry (the first assignment is on NOW!!) Matter Anything that has mass and takes up space. Matter Pure Substances Mixtures Pure substance : matter with _______________ composition Mixture : matter with a ___________ composition Pure Substances Element Compound Element : form of matter that cannot be broken down into simpler substances by _____________________________. Compound : form of matter, made up of two or more elements, that can be broken down into simpler substances by _____________ _______. Mixtures Homogeneous Heterogeneous Homogeneous mixture : a uniform mixture of two or more substance whose ______________________ ______________. Heterogeneous mixture : a _____________ mixture of two or more substances whose proportions can be varied. _________ Properties those which the substance shows as it interacts with, or transforms into, other substances such as flammability, corrosiveness ____________ Properties those which the substance shows by itself without interacting with another substance such as color, melting point, boiling point, density Properties of Matter We learn about matter by observing its properties __________ properties a property that depends on the amount (mass, volume, etc) that is present How much of each ingredient is used to make a pancake? _________ properties a property that is independent of amount ( density, temperature, etc) Physical Properties Properties of Matter _____________ properties of matter describes its "potential" to undergo some chemical change or reaction by virtue of its composition. When a substance undergoes a physical change, its physical appearance changes....
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This note was uploaded on 09/22/2009 for the course CHEM 109 taught by Professor Hart during the Spring '09 term at Nebraska Christian.

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Ch1(5-8)Aug29Fa08a - CHEM 109 General Chemistry University...

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