memistry of covalent strong
bond
ionicbond strong
·
all matter is composed of atoms Itbond weak
van derwaals
-electrons protons neutrons, , &
very weak
number of
protons determines the
identity of the element
·
chemical reactions :
changes in the distribution of electrons btwn atoms
·
chemical bond :
attractive forces that links atoms together Element Usual# of bonds
·
molecule Stable association : utams 1
hydrogen
of
covalent bond shared electrons
strong
:
·
,
2
orggen
↳ differences in covalent bonds
carbon 4
-
orientation >
-
3D
geometry can contribute to function
and determine whether or not a
-strength stability differing
-> bond
strengths
reaction occurs
-
degree of sharing electrons -
altering electronegativity
the attractive forces that atomic nucleus exerts of
electronegativity electrons
·
an on
-
another atom electrons orbiting
↳ around nucleus
equally
non polar covalent bond
⑳
·
equal sharing of electrons
↳
partially negative
·
x
·
polar covalent bond charge
sharing of
↳
unequal electrons
* between C and H so similar that we consider it equal
electronegativity
,
is
bands highly electronegative pulls away from
ionic atom electrons atem with low
·
:
on
electronegativity
↳ ions
electrically charged particles formed when atoms lose or gain electrons
:
bionic bonds formed
by the electrical attraction of positive and negative ions
:
hydrogen bond attraction btunf end of one molecule with St hydrogen end of another molecule
·
:
↳ individual bonds weak large numbers
collectively strong are ,
are
·
van der waals forces : a short lived weak interaction btwn
,
temporary dipoles of
neighboring atoms
importance of water in
biology
·
①hydrogen bands
②universal solvent
③ ageous solution and pH
it takes lot of bands , liquid water can
energy to break it exist at
temperatures
·
a
verying