1. HISTORY OF THE ATOM
GREEKS
DEMOCRITUS
ALL MATTER IS MADE OF ATOMS

2. ATOM TIMELINE
1803
JOHN DALTON, SCHOOL TEACHER
BILLIARD BALL THEORY

3. DALTON ATOMS ARE INDIVISIBLE PARTICLES
ELEMENTS CONSIST OF IDENTICAL ATOMS THAT ALL HAVE THE SAME MASS
COMPOUNDS CONSIST OF DIFFERENT ELEMENTS BONDED TOGETHER BY SOME TIME OF “HOOK”

5. ATOMIC THEORY
1869
MENDELEEV - PRODUCED THE PERIODIC TABLE
PERIODIC LAW

7. ATOMIC THEORY
1898
THOMPSON
“PLUM CAKE MODEL”

8. THOMPSON
ATOMS CONSISTED OF A POSITIVELY CHARGED BALL WITH NEGATIVE CHARGES PLACED ON TOP

10. ATOMIC THEORY
RUTHERFORD
RUTHERFORD MODEL

11. RUTHERFORD ELECTRONS EXISTED IN A CLOUD AROUND A POSITIVE NUCLEUS
USED GOLD FOIL EXPERIMENT.

13. ATOMIC THEORY
BOHR
WORKED FOR RUTHERFORD
PLANETARY MODEL

14. BOHR PLACED ELECTRONS IN STATIONARY, STABLE ORBITS AROUND THE NUCLEUS
HIS EXPLANATION ONLY EXPLAINED THE BEHAVIOR OF HYDROGEN

16. ATOMIC THEORY 1925 ERWIN SCHRODINGER QUANTUM MECHANICAL MODEL
ELECTRON CLOUD (WAVE) MODEL

17. QUANTUM MECHANICS
QUANTUM PHYSICS
WAVE MECHANICS

18. NUCLEUS IS SURROUNDED BY ORBITING ELECTRONS TRAPPED IN AN ELECTRICAL FIELD CREATED BY A POSITIVE NUCLEUS

19. QUANTUM MECHANICS
THE STUDY OF MECHANICAL SYSTEMS WHOSE DIMENSIONS ARE CLOSE TO THE ATOMIC SCALE
FUNDAMENTAL BRANCH OF PHYSICS THAT PROVIDES ACCURATE DESCRIPTIONS FOR PREVIOUSLY UNEXPLAINED PHENOMENA

21. THE PERIODIC TABLE AN ORGANIZED ARRANGEMENT OF THE ELEMENTS

22. THE PERIODIC TABLE THERE ARE 112 KNOWN ELEMENTS
EACH ELEMENT IS REPRESENTED BY ONE BLOCK ON THE PERIODIC TABLE.

23. THE PERIODIC TABLE
ELEMENTS , 118 ARE REPRESENTED ON THE PERIODIC TABLE BECAUSE THEY ARE “THEORETICALLY” SUPPOSED TO EXIST . SOME OF THESE HAVE BEEN REPORTED TO BE ISOLATED BUT IT HAS NOT BEEN CONFIRMED.

24. THE PERIODIC TABLE
OUT OF ALL THE ELEMENTS, ONLY 92 OCCUR NATURALLY. THE REST ARE MAN-MADE OR ARE PART OF THE RADIOACTIVE DECAY PROCESS.

25. PERIODIC TABLE “BLOCKS”
SYMBOL - ONE OR TWO LETTERS THAT REPRESENT THE ELEMENT’S NAME
NAME OF THE ELEMENT
ATOMIC NUMBER - THE NUMBER OF PROTONS

26. BLOCKS ATOMIC MASS - NUMBER OF PROTONS PLUS NEUTRONS
PROTONS AND NEUTRONS HAVE EQUAL MASSES. EACH IS EQUIVALENT TO ONE ATOMIC MASS UNIT - AMU

27. BLOCKS
ELECTRONS ARE TOO SMALL TO MEASURE AND ARE NOT INCLUDED IN THE ATOMIC MASS NUMBER.
SOME PERIODIC TABLES INCLUDE THE STATE OF MATTER IN WHICH THE ELEMENT IS MOST COMMONLY FOUND. - SOLID, LIQUID, GAS

28. CALCULATIONS
GIVEN A KNOWN ELEMENT, DETERMINE THE CORRECT NUMBER OF PROTONS, NEUTRONS, AND ELECTRONS.

29. # OF SUBATOMIC PARTICLES
PROTONS - EQUALS THE ATOMIC NUMBER
NEUTRONS - ATOMIC MASS - ATOMIC NUMBER
ELECTRONS - EQUALS THE NUMBER OF PROTONS

30. BERYLLIUM ATOMIC NUMBER = 4 ATOMIC MASS = 9
HOW MANY PROTONS, NEUTRONS, AND ELECTRONS?