1. Catalyst: 1. Draw a picture of the atom. Label its parts
Thursday, September 18, 2014

2. Announcements/HW LAB REPORTS DUE TOMORROW BY 8AM (ON GOOGLE)
WS 1.6- Isotope Exploration
Office Hours tonight

3. From yesterday AGENDA: Catalyst (5) HW check (1) Quiz (10) Video (2)
Notes (10)
Models (5)
Lab Wrap-Up (5)
Writing analysis/conclusion s (5)
Announcements (2)
Exit Slip (2)
Particle
Charge
Mass (AMU)
Location
Proton + 1
Nucleus
Electron -
1/1837 ≈ 0
Electron Cloud
Neutron
1.002 ≈ 1

4. New vocabulary! Atomic Number: The number of protons in an atom
AGENDA:
Catalyst (5)
HW check (1)
Quiz (10)
Video (2)
Notes (10)
Models (5)
Lab Wrap-Up (5)
Writing analysis/conclusion s (5)
Announcements (2)
Exit Slip (2)
Atomic Number: The number of protons in an atom
Atoms are neutral, so:
# Protons = # electrons
Create a neutral atom of
Hydrogen
Oxygen
Fluorine

5. Objectives! Objectives:
AGENDA:
Catalyst (5)
Book check out (2)
Notes (5)
Isotope Activity (15)
Writing analysis/conclusion s (10)
Announcements (2)
Exit Slip (2)
September 18, 2014
Notes 1.7
Objectives:
1. SWBAT define neutrality and explain neutrality of ATOMS
2. SWBAT define isotopes and apply isotopic notation.

6. Mass Number Atomic Number # of protons + neutrons
NOT ON periodic table
Element symbol
Use atomic # (# of protons) to find it on the periodic table
Atomic Number
# of protons
Top of periodic table

7. Isotope Activity Discover WHAT exactly an isotope is.
AGENDA:
Catalyst (5)
Book check out (2)
Notes (5)
Isotope Activity (15)
Writing analysis/conclusion s (10)
Announcements (2)
Exit Slip (2)
Discover WHAT exactly an isotope is.
Please get out WS 1.6
You will have 20 min to work through the exploration with your group.

8. For atoms 1 & 2:
For atoms 3 & 4:
Black: Protons
Red/orange: Protons
Yellow: Neutrons
Clear pink: neutrons
Green: Electrons

9. With your group… Decide what your definition of an isotope is!
AGENDA:
Catalyst (5)
Book check out (2)
Notes (5)
Isotope Activity (15)
Writing analysis/conclusion s (10)
Announcements (2)
Exit Slip (2)
Decide what your definition of an isotope is!
BE READY TO SHARE!

10. So what is an isotope?
AGENDA:
Catalyst (5)
Book check out (2)
Notes (5)
Isotope Activity (15)
Writing analysis/conclusion s (10)
Announcements (2)
Exit Slip (2)
Isotopes are atoms with the same number of protons but different numbers of neutrons.

11. Announcements/HW LAB REPORTS DUE TOMORROW BY 8AM (ON GOOGLE)
WS 1.6- Isotope Exploration
Office Hours tonight

12. Exit Slip
1. In two isotopes of the same element, the number of protons is… (the same/different)
2. In two isotopes of the same element, the number of electrons is… (the same/different)
3. In two isotopes of the same element, the number of neutrons is… (the same/different)
4. Do isotopes of the same element have different mass numbers or atomic numbers? (Mass #/Atomic #)