Keeping Balancing Equations Cool Like They're Going Out of Style

During Friday's class, we went even deeper into balancing equations. So deep that many people would consider it impossible in anyway shape or form. Specifically, we discussed Molecular Equations, Complete Ionic Equations, and Net Ionic Equations.

Molecular Equations

• Molecular Equations show the overall stoichiometry of the equation, but not the actual forms of the substances
• (Example): KCl+AgNO3------------>KNO3+AgCl

Complete Ionic Equations

• Complete Ionic Equations represent, as ions, all substances that are strong electrolytes
• Ionic Compounds dissociate in water
• Spectator Ions are ions that don't react; spectator ions are still included in Complete Ionic Equations
• (Example): K(^+)+ Cl(^-)+NO3(^-)------------>AgCl+K(^+)+NO3(^-)

Net Ionic Equations

• Includes only those ions undergoing a charge (spectator ions are NOT included)
• Net Ionic Equations are only written if a solid is formed
• (Example): Cl(^-)+Ag(^+)------------->AgCl(s)

NOTE: Molecular Equations, Complete Ionic Equations, and Net Ionic Equations are all Double Replacement Reactions

After we deciphered Molecular Equations, Complete Ionic Equations, and Net Ionic Equations, we proceeded to work on our newest worksheet (Net Ionic Equation Worksheet). Here are some tips in completing this worksheet:

1. To find the Molecular Equation, balance the equation given
2. To find the Complete Ionic Equation, seperate ions from compounds (include charges)
3. If a reaction isn't seen, or there is no solid, a Net Ionic Equation isn't needed

We proceeded to work on the Net Ionic Equation Worksheet for the rest of class.

On Monday, we will be doing a series of 48 reactions. The reactions will help establish rules regarding what we talked about on Friday. Furthermore, there is a WebAssign due Monday, on section 4.2 (Precipitation Reactions).

Stay thursty, my friends.

Intro to Balancing Equations

We started off the class today by going over the notes

Balancing equations

View more presentations from gbsliebs2002.

two very important rules to remember, and that Mr. Lieberman was very persistant in reminding us was:

1. DO NOT CHANGE THE SUBSCRIPTS

2. There are no stead fast rules to balancing equations, so the best way to master this skill is to practice, practice, practice.

After showing us these liberating notes he demonstrated a couple experiments for us. Both of which come with an entertaining story.

1. The Water from hydrogen and oxygen eperiment

It all started when Mr. Lieberman was taking a strol in deserted mountains with no one around and no water. Why he was walking in the heat without water or people in general is a mystary to us all. Well, while he was on this hike he got thirsty, but without any water and no connection to civilization he was stuck in the middle of nowhere without a source of water. This caused a problem for Mr. Lieberman, but it just so happened that a hydrogen spring was there and he was carrying two rulers, a balloon and a match. Attaching the balloon, which he had filled up with hidrogen from the spring, to one of the rulers he was ready to make water. His idea was that if he caused a reaction to occur he could make H2O out of the hydrogen and the oxygen in the air. He ran the experiment and low and behold, there was water (or at least some form of it). He demonstrated this awesome experiment in our class:



Along with this riviting story, came the story of his pet elephant Stampy:

Now Mr. Lieberman owns a pet elephant and this elephant is known as Stampy. Stapmy has needs just like any other elephant, and this includes brushing his teeth. Mr. Lieberman being the thoughtful man that he is makes his own elephant toothpaste, just for his Stampy. He demonstrated the making of this special toothpaste for us in class:



These stories made the class interesting and educational, depicting scinerios that use the topics we are learning of in class. Don't forget to write up the prelab including any tables needed for the procadure. If you don't do that you will get no credit for the WHOLE prelab, as I have had to learn from experience.

And now your next scribe will b.......Brandon L. Congrats