1. AP Chemistry Unit 2 – Atoms, Molecules, and, Ions
Day 1 – Check out lab equipment, Chapter 2 Notes, Mass Spectrometry

2. Warm Up – Find the Mass # Particle 32S 34S 33S 36S-2 16 16 16 16 16 16
GLUE IN AND FILL OUT: The following table in your notebook TIME: 6 MINUTES WHEN DONE: Check your answers with your table partner
# Particle
32S
34S
33S
36S-2
# Protons
# Electrons
# Neutrons 16 16 16 16 16 16 16 18 16 18 17 20

3. Notice AP Chem Office Hours posted on board
AP Chemistry Agenda
Finish Checking out lab equipment
Lab Notebooks
Short Lecture and Video
Guided Inquiry: Atomic Number and Atomic Mass OR Work on Homework Problems
Next Class:
First Major Lab
Additional Homework: Read and Annotate Intro to Analysis of Food Dyes
Notice AP Chem Office Hours posted on board

4. Finish Checking Out Lab Equipment
FIND A PARTNER: Spread Out to Other Tables THIS PERSON: Will be your lab partner for the school year DECIDE: If you and your partner would like to have an “even” or “odd” numbered bin WRITE: Your Names with Sharpie on all bins WRITE: Fill Empty Bins with 2-3 Paper Towels Each TIME: 7 MINUTES WHEN DONE: Come grab your lab notebook and read over components that need to be in every lab write up

5. Various Models of the Atom- + + - +
Dalton
Thomson
Rutherford
Bohr
In one of your preliminary questions, you were asked to identify the experimental evidence that led to the development of the atomic models.
Dalton built on the work of other scientists to derive that atoms must combine in whole-number ratios. And that there is nothing smaller than an atom.
Thompson then experimented with the cathode ray tubes and magnetic fields, and determined that charged particles must exist within the atoms themselves, giving evidence that we had electrons, a smaller piece to the atom itself.
Later on Rutherford, who is actually Thompson's former student, conducted the gold foil experiment in attempts to verify Thompson's plum pudding model. But instead, he derived that there must be a dense positive nucleus surrounded by negative charge within the atom.
And then Bohr used atom emission spectrum of hydrogen specifically to determine that there were quantized energy levels within the electron cloud.
Image sources:

6. Size of the Atom
1 A = 1 x m
In one of your preliminary questions, you were asked to identify the experimental evidence that led to the development of the atomic models.
Dalton built on the work of other scientists to derive that atoms must combine in whole-number ratios. And that there is nothing smaller than an atom.
Thompson then experimented with the cathode ray tubes and magnetic fields, and determined that charged particles must exist within the atoms themselves, giving evidence that we had electrons, a smaller piece to the atom itself.
Later on Rutherford, who is actually Thompson's former student, conducted the gold foil experiment in attempts to verify Thompson's plum pudding model. But instead, he derived that there must be a dense positive nucleus surrounded by negative charge within the atom.
And then Bohr used atom emission spectrum of hydrogen specifically to determine that there were quantized energy levels within the electron cloud.

7. Atomic Numbers, Mass Numbers, Isotopes

9. Atomic Weights 1 amu = 1.66054 x10-24 g 1 g = 6.02214 x1023 amu
Based on the measured and calculated mass of 1 Hydrogen atom
Derived from the mass of 1 Hydrogen atom – how many it would take to add up to 1 gram

10. Mass Spectroscopy Video
ON NEW PAGE: Draw and write notes about Mass Spectroscopy from video
MAKE SURE TO: Write Flow Chart, Glue in Model, and Sketch Example of Mass Spectrum
WHEN DONE: Take out Ch 2 notes and homework

11. Mass Spectrum of ________

13. Guided Inquiry: Atomic Number and Mass
IF YOU DO NOT HAVE ANY QUESTIONS ON HOMEWORK: Move to Table 5
WITH THIS GROUP: Work on Atomic Number and Atomic Mass Guided Inquiry
CTQ = Critical Thinking Questions
FOR EXTRA PRACTICE: On Atomic Number and Atomic Mass, check your work on website key
TIME: Until End of Class
WHEN DONE: Have a fabulous weekend and send a message if you have a question!