2. Elements and the Periodic Table

3. An element is a substance that cannot be broken down into simpler substances

6. How to Write Elements Each element is represented with a symbol.
The first letter always capitalized
The second letter (if it exists) is in lower case

7. Name that Element! H
Hydrogen

8. Name that Element! O
Oxygen

9. Name that Element! F
Fluorine

10. Name that Element! Cl
Chlorine

11. Name that Element! Ca
Calcium

12. Name that Symbol!
Magnesium Mg

13. Name that Symbol!
Carbon C

14. Name that Symbol!
Lithium Li

15. Patterns in the Periodic Table

16. Metal, Non-Metal or Metalloid?
Nitrogen
Non-metal

17. Metal, Non-Metal or Metalloid?
Beryllium
Metal

18. Metal, Non-Metal or Metalloid?
Gallium
Metal

19. Metal, Non-Metal or Metalloid?
Arsenic
Metalloid

20. Metal, Non-Metal or Metalloid?
Polonium
Metalloid

21. Periods are horizontal rows
PERIOD (horizontal rows)

22. Groups are vertical columns

23. Name the element that is in ….
group 2, period 3
Name the element that is in ….
Magnesium

24. Name the element that is in ….
group 10, period 4
Nickel

25. Name the element that is in ….
group 18, period 4
Krypton

26. Name the element that is in …. period 4, group 2
Calcium

27. Atomic Structure

28. Dalton’s Atomic Theory
All matter is made up of small indivisible particles called atoms
All atoms of the same element are identical in size and mass
Atoms of different elements have different properties
Atoms of different elements combine in specific ways to form new substances

30. Atomic Structure – Model of the Atom
An atom is the smallest particle of an element which is still considered to be that element.
electrons are located outside of the nucleus
protons and neutrons are located inside the nucleus

31. Atomic Structure – Model of the Atom
Subatomic Particles 
Proton
Neutron
Electron
Electrical Charge
positive
neutral
negative
Symbol p+ n0 e-
Location
nucleus
orbits around the nucleus

33. atomic # = # protons = # electrons

34. Atomic Mass = read the periodic table

35. # neutrons = mass # - atomic number

36. Atomic Structure – Model of the Atom
Example: Oxygen Symbol is Period # is Group # is Atomic # is # of electrons is # of protons is Mass # is # of Neutrons is O 2 16 8 8 8
16.0
16-8 = 8

37. Atomic Structure – Model of the Atom
Example: Sodium Symbol is Period # is Group # is Atomic # is # of electrons is # of protons is Mass # is # of Neutrons is Na 3 1 11 11 11
23.0
23-11 = 12