PART 1.1

ATOMOS

ATOMIC THEORY AND LAW OF MULTIPLE PROPORTION

LAW OF DEFINITE PROPORTION

ELECTRON

NEUTRON

PROTON

CREATED THE MODERN PERIODIC TABLE

DEVELOP THEORY OF COVALENT BOND

FORMULATED VALENCE THEORY AND ELECTRONEGATIVITY

L: matter remains the same before and after reaction occur

same reactant = same product

L: same proportion of elemet by mass

L: two elements when combined form more than one compound

6.02 x 10-23 mol-1

"EQUAL VOLUME, GAS, SAME TEMP. AND PRESSURE, SAME NUMBER OF MOLECULE"

smallest constituent unit of matter

CANNOT BE BROKEN DOWN INTO SMALLER SUBSTANCES

TWO OR MORE DIFFERENT ELEMENTS

SIMPLIEST TERM OF SUBSTANCE

IS PART OF AN ELEMENT

NUMBER OF PROTON IN A NUCLEUS

TOTAL # OF PROTON AND NEUTRON IN A NUCLEUS

SAME ELEMENT WITH DIFFERENT NUMBER NEUTRON

FATHER OF CHEMISTRY

IN NEUTRAL ATOM THEY ARE THE SAME

DESCRIBE THE POSITION AND ENERGY OF ELECTRON IN AN ATOM

DESCRIBE HOW ELECTRONS ARE DISTRIBUTED IN ITS ATOMIC ORBITALS

ENUMERATE THE MAXIMUM NUMBER OF ELECTRONS PER SUBSHELL

ENERGY REQUIRED TO REMOVE AN ELECTRON

AMOUNT OF ENERGY LIBERATED WHEN A MOLECULE OR NEUTRAL ATOM ACQUIRES AN ELECTRON

ATTRACT ELECTRON TOWARDS ITSELF

ION CONSIST OF ONE ATOM

MOLECULE CONSIST OF TWO ATOMS

NO 2 ELECTRONS CAN HAVE SAME 4 ELECTRONIC QUANTUM NUMBER

FILL SUBSHELLS OF THE LOWEST AVAILABLE ENERGY

EVERY ORBITAL IS SINGLY OCCUPIED BEFORE ANY ORBITAL IS DOUBLY

PERIOD IN PERIODIC TABLE

rule that dictates atoms are most stable

rule that dictates their valence shells are filled with 8 electrons

outermost shell of an atom

electron in outermost shell of any atom

when atom gain or lose valence electron they become

an atom or group of atom that has an electric charge

two types of ions

are negatively charge

when atom loses an electron they become positive or negative?

when atom gains an electron they become positive or negative