BIO1140 Study Group #1 Answer Key

BIO1140 Study Group #1 Answer Key - BIO1140 Study Group #1:...

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BIO1140 Study Group #1: Answer Key Jan. 19th, 2010 1. C, H, N, O, P and S are the primary components of organic molecules. Others (<1%): single ions Na + , K + , Mg 2+ , Ca 2+ , Cl -. 2. Molecule: two or more atoms bond together to form a molecule (NaCl, H 2 , CH 4 ..) Compound: molecule composed of more than one type of element (NaCl, H 2 SO 4 , H 2 O…) Chemical bonds: form by exchanging the outer layer electrons between two or more atoms 3. Ionic: complete loss or gain of one electron, negative or positive ion. ie. NaCl: More electron negative Cl atom attracts an electron and Na loses an e - Covalent: electrons are shared between two atoms. ie. methane; the 4 valence electrons, equal energy levels, in SP3 hybrid orbitals. Completed by sharing with 4 electrons of four H atoms. 4. Bonding with another Carbon Linear, branched or cyclic C backbone chains Result in almost unlimited diversity of molecules Covalent bonding with elements other than carbon i. Hydroxyls; found in alcohols, sugars
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This note was uploaded on 03/30/2012 for the course SCIENCE BIO1140 taught by Professor Fenwick during the Spring '09 term at University of Ottawa.

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BIO1140 Study Group #1 Answer Key - BIO1140 Study Group #1:...

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