Bio1_ch2-3post

Bio1_ch2-3post - Chapter 2-3 – Atoms Water& Carbon...

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Unformatted text preview: Chapter 2-3 – Atoms, Water & Carbon • !"#$% • ’#()*+()% • ,-%.* *-/0#1 *2)$.%"/3 • 4-")/ The Chemical Composition of Humans Matter: Elements and Compounds !"#$% 5 #**+6.)% %6-*) -17 2-% $-%% 8#1 9-/"2: • ;#(.7 • <.=+.7 • >-% &’$($)*+ 5 %+0%"-1*)% "2-" *-11#" 0) 0/#?)1 [email protected] .1"# #"2)/ %+0%"-1*)%A • BC 1-"+/-((3 #**+//.1D )()$)1"% #1 9-/"2 Cloud of negative charge (2 electrons) Nucleus Nucleus The Structure of an Atom Elements and Molecules – E 6/#"#1% ! "36) #F )()$)1" –-*.(/0 ("++ 1 E 6/#"#1% 2 E 1)+"/#1% – !.’$03’$+ 5 *#$0.1-G#1% #F )()$)1"% • CH -"#$% ! *2)$.*-( 0#17% • 9IJ K-L( 4.5/3( 67’.%/)$ 4.5/3( 07’.%/5$ Hydrogen (H) Atomic number = 1 Outermost electron shell Carbon (C) Atomic number = 6 Nitrogen (N) Atomic number = 7 Oxygen (O) Atomic number = 8 First electron shell Electron Electrons are arranged in “shells” • 9-*2 %2)(( 2-% - 6/#D/)%%.M)(3 2.D2)/ )1)/D3 ()M)( • 9-*2 %2)(( $+%" 0) N(()7 0)F#/) "2) 1)I" #1) .% +%)7 !OPO Q-/? Electron Shells - 8"’’ 8.3)0/)9 5.:) " ;/97* .< +*"/%+ =%.>/5$+ ") ")"’.9? <.% $)$%9? ’$>$’+ .< $’$0*%.)+@ A7/%5 +7$’’ B7/97$+* $)$%9? ’$>$’ /) *7/+ (.5$’C 4$0.)5 +7$’’ B7/97$% $)$%9? ’$>$’C D/%+* +7$’’ B’.:$+* $)$%9? ’$>$’C-*.(/0 )30’$3+ &)$%9? "8+.%8$5 &)$%9? ’.+* B8C B"C Electron Valences and the Periodic Table D/%+* +7$’’ 4$0.)5 +7$’’ A7/%5 +7$’’ E?5%.9$) F E G/*7/3( H G/ 4.5/3( FF I" J$%?’’/3( K J$ !"9)$+/3( FL !9 J.%.) M J-’3(/)3( FH-’ 6"%8.) N 6 4/’/0.) FK 4/ I/*%.9$) O I P7.+=7.%3+ FM P QR?9$) S Q 43’<3% FN 4 D’3.%/)$ T D 67’.%/)$ FO 6’ I$.) FU I$-%9.) FS-% E$’/3( L E$ L E$ [email protected] !"++ )3(8$%-*.(/0 )3(8$% &’$($)* +?(8.’ &’$0*%.) 5/+*%/83V.) 5/"9%"( Elements and Molecules – E 6/#"#1% ! "36) #F )()$)1" –-*.(/0 ("++ 1 E 6/#"#1% 2 E 1)+"/#1% – !.’$03’$+ 5 *#$0.1-G#1% #F )()$)1"% • CH -"#$% ! *2)$.*-( 0#17% • 9IJ K-L( 4.5/3( 67’.%/)$ 4.5/3( 07’.%/5$ Hydrogen (H) Atomic number = 1...
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This note was uploaded on 02/09/2012 for the course BIOLOGY E2A taught by Professor Anderson during the Spring '11 term at Harvard.

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Bio1_ch2-3post - Chapter 2-3 – Atoms Water& Carbon...

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