·
qu chemical elements only 30 , important for living organisms (humans
Bulk elements : non-metals ;
by mass make-up greatest portion of plants/Animals/bacteria
Trace elements : metals , needed
only in small amt
.
-
iron used in
,
hemoglobin
Small molecules are the
building blocks for large molecules
:
H20 Water
.
CH20
Carbon 104
CU2 :
dioxide WHz : Ammonia CHy :
H
methane
-
smaller bonds : Stronger/stable covalent bonds
-
allows sells to form
-
large elements Weaker unstable : bonds , don't form covalent bonds
-
iron transports O2
,
↳ in RBC iron portin hemoglobin O2 from
,
is part of that carries
lungs - tissues
↳ forms ions
capable of
binding to 02
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, 1 2
.
Organic Chemistry
Ochem :
Study of carbon-based compounds
Carbon : Superglue of Chem word
·
Y Valence e- , permits a bonds to form
·o
H
HC
H
·
forms long chains
C -
c -
c -
C
·
forms double : triple bonds
= · c = C :
· forms
rings compounds (cyclic compounds) * restricted movements
C C
-building structures
-
I
c -
c
-maintain shape
·
forms bonds btwn H ,
N , O , etc .
C N C
H-H
-
O
-
C = N C = 0
Alkane : :
Carbon Hydrogen
EX : Butane breakdown Propane (3) pentane (5)
Chemical formula : CH , c
Condensed formula : (H3)HzCHzCH3 Hexane (6)
kekule formula :
# H
i - -j -[ -
H
H -
C -
C -
C -
C - H I I
c
-
H
H
-
it it i it
-
H i h
I
H H
: H
line bond formula : H + it
+ -
⑧
HH i
Chemical Formula : CnHzcnt
This study source was downloaded by 100000903674671 from CourseHero.com on 02-11-2026 06:05:40 GMT -06:00