Sept. 27 – Periodic Table

Learning Goals: Understand the organization behind the periodic table.

Success Criteria: You can identify different families in the periodic table, describe what group they belong in and their properties.

Dmitri Mendeleev was the first one to organize elements into a table.  He was able to predict that some elements were missing.  These elements were later discovered by other scientists.

Today we had an in depth discussion about the different elements that appear on the periodic table.  You do not need to memorize the table, just the first few elements.  Here is the completed handout that we discussed in class.

Handout: Periodic Table

Can you tell the difference between a metal and a non-metal?

Here's a video of different halogens (group 17):

• http://www.youtube.com/watch?v=yP0U5rGWqdg

Here's a couple of videos showing how reactive sodium is: 

•  http://www.youtube.com/watch?v=vRKK6pliejs
•  http://www.youtube.com/watch?v=Vxqe_ZOwsHs

Sodium is an example of an Alkali Metal (group 1).

Here's a video of magnesium burning, similar to what I did in class.  Actually, many of you have your own videos if you recorded me in class!  Magnesium is an example of an Alkali Earth Metal (group 2).

• http://www.youtube.com/watch?v=PLEGWVU7cAk

Homework:

• Do questions on page 215 #6, 7, 8
• Do questions on page 225 #1, 2, 5, 8, 9, 10