HW#6e -- Friday, Sept. 23

HW#6d -- Thursday, Sept. 22

HW#6c -- Wednesday, Sept. 21

For HW on this day, finish problems #1-6 on the 'Bohr model' worksheet that we started on today in class. You are welcome to try the last two or three, marked with stars, for bonus credit. Remember, there are three rules:

1) Fill in the energy levels closest to the nucleus first
2) Do not move up to the next energy level until you've filled the one before it (1st ring fills with two electrons, 2nd ring fills with eight, 3rd ring fills with eight, etc.)
3) Only use exactly as many electrons as you have. For example, Boron's atomic number is 5, meaning that it will have five protons and, being neutral, it will have exactly five electrons.

You may find this online periodic table (click here) helpful for completing this exercise, and it might also help you finish coloring, labelling and writing two facts about each of the families on your periodic table.

HW#6b -- Tuesday, Sept. 20

Your homework for today is to finish labelling with color the seven element families on the period table. In the end, your table should have:

Alkali Metals
Alkaline-Earth Metals
Halogens
Noble Gases
Transition Metals
Lanthanides
Actinides

You should write the name of each family on the front, next to the family. Also, you need to have two facts written down for each family (can be on the front or the back).

If you're not going to use the textbooks in our classroom to finish working on this (i.e., during lunch, after school), then you can read about the families here (click for link). Just click each different link at the bottom left to read about the different families.

Keep in mind that there are still three more families close to where the 'staircase' is on the table (by silicon, for example) that we will talk about later.

HW#6a -- Monday, Sept. 19

Check out this site (click for link) for an online version of the periodic table that will help you complete this assignment.