1. # of Protons; # of Electrons # of Protons plus Neutrons
BELL WORK!
Review your notes.
Make sure you know the difference between the mass number and atomic number.
Also, you should know how to tell how many protons, neutrons, and electrons an atom has.
Atomic #
# of Protons; # of Electrons
Mass #
# of Protons plus Neutrons

2. This is what we know… Everything is made of atoms.
Atoms are the smallest thing that still resembles that thing.
Atoms are made up of protons, neutrons, and electrons.
Electrons are the smallest and are outside the nucleus on electron clouds. They have a negative charge.
Protons and neutrons make up the mass number and are inside the nucleus. Protons are positive.

3. The Periodic Table
Chapter 11

4. Grouping the Elements…
Let’s make an interactive periodic table.
Metals get less reactive as you go right.

5. Grouping the Elements…
Let’s make an interactive periodic table.
Group 17 is the most reactive nonmetals.

6. Grouping the Elements…
Color the square for hydrogen yellow.
Hydrogen

7. Grouping the Elements…Alkali Metals
Color the alkali metals red.
Group 1
Alkali Metals
Underneath: Most Reactive Metals

9. Grouping the Elements…Alkaline-Earth Metals
Color the alkaline-earth metals purple.
Group 2
Alkaline-Earth
Underneath: Very Reactive Metals

11. Grouping the Elements…Transition Metals
Color the transition metals blue.
Groups
3-12
Transition Metals
Underneath: Metals that do not give up their electrons easily

13. Grouping the Elements…Transition Metals
Outline the lanthanides yellow. Outline the actinides dark blue.
Lanthanides
Actinides

14. Grouping the Elements…Metalloids
Draw the metalloid zig zag line red.
Metalloids

15. Grouping the Elements…Boron Group
Label this group.
Group 13
Boron Group
Underneath: 3 valence electrons

16. Grouping the Elements…Carbon Group
Label this group.
Group 14
Carbon Group
Underneath: 4 valence electrons

17. Grouping the Elements…Nitrogen Group
Label this group.
Group 15
Nitrogen Group
Underneath: 5 valence electrons

18. Grouping the Elements…Oxygen Group
Label this group.
Group 16
Oxygen Group
Underneath: 6 valence electrons

19. Grouping the Elements…Halogens
Color the halogens green.
Group 17
Halogens
Underneath: Most Reactive Nonmetals

21. Grouping the Elements…Noble Gases
Color the noble gases orange.
Group 18
Noble Gases
Underneath: Unreactive

23. Question #1: Alkali Metals (Group 1)
What are the most reactive metals?
Alkali Metals
(Group 1)

24. Question #2:
What group is unreactive?
Noble Gases
(Group 18)

25. Question #3:
How many electrons does Magnesium have? 12

26. Question #4:
How many neutrons does Beryllium have? 5

27. Question #5:
How many valence electrons does Sodium have? 1

28. Question #6:
The black circles in the Bohr model above represent neutrons. What do the white circles represent?
Protons

29. Question #7:
What element is this?
Beryllium

30. Question #8:
How many protons does an atom have with an atomic number of 23 and a mass number of 51? 23