Today we continued our discussion about electron configurations, which is basically a method of keeping track of all the electrons in an atom and where they are in the electron shells. We will use a tool called an Aufbau Diagram to help us determine the electron configuration for each element.
We also spent some time talking about the Quantum Model of the atom, which is our most accurate model of the atom to date.
Notes from today: Quantum Model and Electron Configuration Smart Board Notes
Double Slit Experiment Video that was mentioned in class.
Here are some notes from a PowerPoint that discusses the quantum model of the atom in more detail than is needed in our course, but you may find helpful. Quantum Model PowerPoint
Today we will go over the weekly practice 1.2 and take the weekly quiz.
We will do a little review on how to use scientific notation. Here are some Scientific Notation Notes in case it has been a while since you thought about numbers in scientific notation, to help you with this week's weekly practice.
Proficiency Opportunity: Scientific Notation
During class today, we will focus on "Periodic Trends" because they tend to change in predictable ways as you move across and down the PT. All of these trends can be explained with Effective Nuclear Charge, so you should not attempt to memorize these. Instead, it will help you immensely if you can logically reason how Effective Nuclear Charge is causing each of them to change.
Watch the two videos below which demonstrate periodic trends.
Which periodic trend does this video demonstrate?
We will start today with a little review on how to use scientific notation. Here are some Scientific Notation Notes in case it has been a while since you thought about numbers in scientific notation, to help you with this week's weekly practice.
Today, we will be looking at Effective Nuclear Charge (or Zeff). We will use Zeff to predict a variety of properties about atoms. The three properties that we will focus on in this class include:
Atomic radius (size)
Electronegativity
Ionization energy
Notes from today on Effective Nuclear Charge
Zeff Analogy Assignment:
We will also model effective nuclear charge in class today and spend some time creating your own analogy similar (but different) to the ones we discussed in class. Here is a good example: Led Zefflin Concert. Your model or drawing should be self-explanatory, but if you don't feel that all of the aspects below have been covered, you can include a short written explanation that discusses how these things are depicted in your analogy and how they affect or are affected by the effective nuclear charge. You can do this on the back of the assignment.
Number of protons
Shielding electrons
Distance from nucleus
First two electrons (with no shielding)
Valence shell electrons
Weekly Practice 1.2 (Remember the answer key is in my room if you get stuck)
Today we will go over the homework problems from last week and take our first Weekly Quiz 1.1. Remember, this quiz is open-note.
Today we will continue our look at isotopes by going over some isotope example problems. The majority of what we do today will be looking at Average Atomic Mass and how it is calculated. We'll do the Guided Learning WS on Average Atomic Mass. (if not finished in class, you should attempt to finish the remainder of the questions before the next class period)
Make sure to bring a copy of the periodic table to the next class period.
Proficiency Opportunity: Bohr Model
Today we will continue going over our first set of notes on Atomic Structure and get started on our first Weekly Practice Problems 1.1
Today, we will aim to accomplish several things:
We will use what we find during the scavenger hunt to learn about the safety procedures and features in the room to make sure that everyone is safe in the lab.
Spend a little time going over the way the class will work this year and how things like homework, quizzes/tests, and labs will be run.
And lastly, start going over our first set of notes on Atomic Structure and get started on our first Weekly Practice Problems 1.1
As homework for this first week, students are to do the following things for the next scheduled class period:
If you haven't already, please fill out the Introduction to Chemistry Questions to show that you found the website and to give me some information about yourselves.
Check out the course syllabus, which is posted on the Syllabus page in Canvas. Send me a note in Canvas stating that you have read it and shared it with your parents/guardians.
We don't really use a textbook, but we do have one available as a resource that may be helpful at home. If that sounds like something that you might want to use at home, you can grab one from the library bookroom.
Homework:
Share the course syllabus information with your parents/guardians. Write a statement that you understand and agree to the course guidelines. Submit the statement in Canvas. Let me know if you have any questions regarding the syllabus.