1Atomic number
The number of protons in an atom
2Atomic mass
average weight of an atom
3AMU/Dalton
The typical unit for measuring weight for atoms
4Electron shell
A cloud of electrons surrounding the nucleus or another shell
5Valence shell
The outermost shell that defines the atoms stability
6Oclet rule
The less full the valence letter, the more reactive the atom
7Chemical bond
Two or more atoms interacting
8Molecule
Two or more atoms bound together
9Compound
Two or more atoms of different elements bound together
10Covalent bond
A chemical bond in which atoms are shared
11Non Polar covalent bonds
Covalent bonds with similar electronegativity
12polar covalent bonds
Covalent bonds with very different electronegativity
13electronegativity
The amount of pull an atom has
14Ion
an atom that has lossed or gained electronegativity
15cation
A positively charged ion
16anion
a negatively charged ion
17ionic bond
a bond in which one atom steals electrons from the other
18hydrogen bonds
Polar covelent bonds being attracted to one other from varying electronegativity
19Solvent
A substance that can dissolve molecules
20Hydrophillic
Dissolves in water
21Hydrophobic
Stays seperate from water
22Surface tension
The tendacy for liquids to stick together
23Organic molecules
naturally found molecules
24hydrocarbons
an organic compound made entirely out of carbon and hydrogen
25Isomer
molecules using the same atoms but different orientation