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u2lectout - Unit 2: Matter and Energy Name: _ Matter...

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Unit 2: Matter and Energy Name: ___________________ Matter Introductory Definitions matter : anything having mass and volume mass : weight : volume : units: L, dm 3 , mL, cm 3 L 3 state of matter : composition : copper: water: properties : -- -- atom : a basic building block of matter Elements contain only one type of atom 1. monatomic elements consist of unbonded, “like” atoms e.g., 2. polyatomic elements consist of several “like” atoms bonded together diatomic elements: others: allotropes : different forms of the same element in the same state of matter OXYGEN CARBON molecule : a neutral group of bonded atoms 1
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2 Description Chemical Symbol Model 1 oxygen atom 1 oxygen molecule 2 unbonded oxygen atoms 1 phosphorus atom 1 phosphorus molecule 4 unbonded phosphorus atoms Compounds …contain two or more different types of atoms …have properties that are different from those of their constituent elements Na (sodium): Cl 2 (chlorine): Atoms can only be altered by ____________ means. Molecules can be altered by ____________ means. e.g., Dehydration of sugar C 12 H 22 O 11 (s) 12 C(s) + 11 H 2 O(g) Electrolysis of water 2 H 2 O(l) 2 H 2 (g) + O 2 (g) 2
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Compound Composition All samples of a given compound have the same composition. Phosgene gas (COCl
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This note was uploaded on 11/09/2011 for the course CHEM 110 taught by Professor Sullivan during the Fall '10 term at BYU.

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u2lectout - Unit 2: Matter and Energy Name: _ Matter...

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