For the last part of the this unit, I want us to talk about radioactivity and the decay of the atomic nucleus.  We’ll be doing a half-life activity so that you’ll be able to calculate 1/2 lives.  First, our notes:

Next, some videos :

And here’s a link to our pooled data. Remember, to access some shared documents you must be signed into google through your Bethel google account.  This means go to google and sign out and sign back in with the correct account.

Wellness Unit 1 Semester 2

Wellians! In the first couple of days we went about introducing the idea and asking questions about what is ‘wellness’ really?

First, we took some structured notes on some background information:

The next class we took notes on a decision making framework called the D.E.C.I.D.E steps. Here’s our notes for those:

Last week we covered SMART goals, which you are sure to run into in the professional workplace and are a great way to organize yourself to accomplish big tasks.  I use SMART goals everyday in my life.  The key is to set small, specific, and reachable goals along the way to your main goal.  Below are the slides we used to go over the concept:

Our next 2 lessons covered the basics of First Aid. We learned how to approach an emergency (don’t rush in!), get professionals on the scene ASAP (call 911), and keep the victim alive as best you can.  Specifically we covered helping a choking person and how to administer compression only CPR.  The slides are below:

Periodically Updated part 2

Now we are really getting into using the Periodic Table and worked to get familiar through these worksheet packets.

Then we took a step back to make Bohr models of atoms using beans and peas.

That exercise should have been good practice for the quiz in finding numbers of protons, electrons, and neutrons of an element or isotope.

We got new text(book)packets to take home as well.

I’ve gathered some great periodic table resources here for you to take a look at:

A great Interactive Periodic Table

In the next class we covered in excruciating detail the classes of the Periodic Table in notes and a Crash Course Chem.

PS. Don’t forget your Periodic Family Assignment!  Answer the questions on the instructions sheet!

Periodically Updated

The last couple days in Foundations we covered in depth what the Periodic Table can tell us and why it is put together the way it is!

To start, lets watch some videos on the construction of the Periodic Table:

A TED-Ed animated bit  don’t forget to look at the quiz associated with it make sure you followed along.

Another TED-Ed animated bit  again, use the ‘THINK’ quiz to test yourself.

We’ll also have some notes on the general trends and locations in the periodic table:

Be sure to be able to identify the areas of the Table such as:

• Alkali Metals
• Earth Alkali Metals
• Transition Elements (Metals)
• Metalloids
• Non-metals
• Halogens
• Nobel Gasses
Remember that the electron shells are filled just as they are on the periodic table:
2
8
8
18
and so on

Atomic Mass and calculating Neutrons

First of all, we took a quiz over the history and structure of the atom.  Watch this Crash Course Chemistry to get a review.

This week we started with some practice on calculating neutrons. We did some reading from the text in class, then covered these slides:

Remember these basic rules:

• the Protons are the identity of the element and also the number of electrons
• Mass Number is for a given isotope (usually we just round the atomic mass from the table)
• Protons + Neutrons = mass number

Don’t forget to do this reading too: Atomic Masses.

Up and Atom! Lets Gets Started!

We start second semester off and running learning about the nature and history of the ‘atom’ and Atomic Theory.

We’ll start by watching NOVA: Hunting the Elements which covers much of the content of the next 2 units Atomic Structure, Periodic Table, and Atomic Bonding.

Next, we’ll take some quick notes on the History of Atomic Theory to get us acquainted with the atom.  Here are the Slides :

And here is our reading on the structure of the Atom.

This TED-Ed does a great job of reviewing the History of Atomic Theory:

Lastly, here’s a modern reconstruction of the famous gold foil experiment that proved that most of all matter is actually empty space! https://www.youtube.com/watch?v=XBqHkraf8iE