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buffer
maintains pH by adding or releasing H
element
substance that cant be separanted into simpler substances, nor converted into other substances by ordinary chemical means
atoms
fundamental structure of atoms
atomic number
number of protons
atomic mass
total mass of protons neutrols and electrons
isotopes
atoms of the same element with diff numer of neutrons
molecule
two or more attoms of the same or different elements held together
inert
atom that wont react with other atoms when its outermost shell is full
free radical
molecule that readily react with others
ionic bond
an electron is transfered, creating positive and negatve ions that attract one another
covalent bond
electrons shared. polar/ nonpolar
polar
covalent bond. unequal sharing.
nonpolar
covalent. equal sharing
hydrogen bond
Author
Siobhan
ID
99381
Card Set
bio
Description
bio chapter 2
Updated
2011-09-01T19:30:54Z
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