3/15 Chemistry update and homework due 3/22

Hi folks,

Today we discussed some of the trends on the periodic table.  Electronegativity, Radius, Ionization Energy, and Metallic Nature.  

We also covered the methods atoms can bond to one another, covalent, metallic and ionic.

Homework for this week is to:

Read 173 - 186

Do questions starting on pg 200

Odd #'s 1 - 23

Memorize the following chemical symbols and the elements they represent.  I highly recommend making flash cards for this.

H He Li C N O NA Mg Al S Cl K Ca Fe Ci Zn Si Au Sn Hg Pb

These are common polyatomic ions.  Memorize these and their charges.

-1 Charge

Hydrogen Sulfite HSO3-

Hydrogen Sulfate HSO4-

Nitrite NO2-

Nitrate NO3-

Hydroxide OH-

-2 Charge

Sulfite SO32-

Sulfate SO42-

Carbonate CO32-

+1 Charge

Ammonium NH4+

Never Stop Wondering

"Science Jim"  Mueller

(919) 929-9791

A Fun Approach to Serious Physics!

Sciencejim

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Recording of 3- 8 Class

Here are the recordings from last week's class.

Chemistry 3/8 #1 http://youtu.be/S94NTYKBaRA

Chemistry 3/8 #2 http://youtu.be/ODDU7LzWfYo

3-8 chemistry update and homework due 3/15

Hi folks,

Today we basically took the time to summarize what we've been working on the past 3 weeks. The periodic table, electrons, diagraming atoms, electron configurations and creating molecules. The information from the past 3 weeks is absolutely vital to the rest of the year as it will continue to be built on as we move forward. Please make sure you feel comfortable with this information.

Homework this week is to complete the enclosed .pdf. It's a (hopefully) fun activity that will give you a deeper understanding of the periodic table and its structure. Below are a few hints to help you out. (Stuff we haven't covered in class yet.)

Hints:

In #5 it talks about the most metallic element. The elements to the bottom left of the periodic table are the most metallic. For example, for us, Francium is the most metallic metal. The closer an atom is to the bottom left the more metallic it will be.

Chemically active non-metals are to the upper left of the periodic table. So for us fluorine is the most active non- metal. The closer an atom is to the top right the more active it will be. Active means eager to bond with other metals.

10. An atom is diatomic if it pairs of atoms form a stable molecule. For example, O2 is a stable gas. H2 is a stable gas.

Good Luck!!!

3rd Session has begun

Hi folks,

Just a reminder for some that that 3rd session of classes has begun and payments are due.  Thanks everyone!

Never Stop Wondering

"Science Jim"  Mueller

(919) 929-9791

A Fun Approach to Serious Physics!

Sciencejim

Join my Facebook page!

Facebook | Science Jim

Recording for 3/1 Chemistry Class

Here's the recording for the 3/1 class.

http://www.youtube.com/watch?v=Whgt8PrGn40

pdf for homework due 3/8

Hi folks,

Sorry about that, I forgot to included the .pdf. Here you go.

3/1 Chemistry update and homework due 3/8

Hi folks,

This week we got even deeper into the periodic table as we looked at how to use it to tell us about valence electrons and the number of bonds an atom may have.  We also began looking at how atoms bond to form molecules.

Homework this week is to: 

Read the text pgs. 57 - 62

 

Do questions on page 64

9 - 14 and 23 - 34

Complete the enclosed .pdf.  The answers are included so that you can check your answers and see if you're getting the hang of it!!! This material will be on the quiz next week so really work to see if you can get a hold of this.