Chemistry Lecture Notes - August 25, 2006

Chemistry Lecture Notes - August 25, 2006 - August 25, 2006...

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August 25, 2006 Chemistry Lecture #1 Matter – anything which has mass and takes up space. Chemistry – The study of matter and the changes it undergoes. A mixture is a combination of two or more substances in which the sunstances retain their distinct identities. Homogeneous mixture – composition of the mixture is the same throughout. Another name for a homogeneous mixture is a solution . Uniform throughout mixtures Homogeneous – flat soft drink, fresh air, solder (mixture of various metals, mixed when melted, and then solidified.) Homogenized milk Heterogeneous mixture – composition is not uniform throughout. Iron filings and sand, cement Physical means can be used to separate a mixture into its pure components. Physical means – distillation (boiling out, alcohol & water); iron filings and sand – magnet pulls iron away from sand An element is a substance that cannot be separated into simpler substances by chemical means . o
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This note was uploaded on 04/20/2008 for the course CHE 105 taught by Professor Woodrum during the Fall '06 term at Kentucky.

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Chemistry Lecture Notes - August 25, 2006 - August 25, 2006...

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