I plan to skip science class this Thursday and just have a long art class.  Please come to art prepared with photos and ideas.  Just this once, we will start class at 9:30.

This science homework is to be completed by Monday; DO NOT put it off to the weekend, please.

Finishing parts I and II from the lab... Synthesis and Decomposition experiments (1-7)
In your science journals, go back to each experiment, including the ones we did NOT do, and figure out the balanced equations for each synthesis and decomposition  reaction.  I will write the answers on the board on Thursday so you can check.

Don't lose your experiment sheets, we will do the rest of the labs next Monday/some of them, anyway.

TAKE NOTES ON VIDEO!!!

This is some extra information you might need for doing Worksheet 4.

Single Displacement Reactions:   A +  BC ->  B + AC
These reactions only happen if   metal A is more reactive than metal B.
You can tell which metal (A or B) is more reactive by either doing the experiment, or looking it up on a list called a "reactivity series".
The metals at the top are more reactive than the ones below.

For instance,  zinc will replace iron but not magnesium, because zinc is higher on the list than iron, but lower than magnesium.  Top guy wins.

• 3Zn +FeCl3  >>  Fe +3 ZnCl    this works, the zinc replaces the iron in the iron(III)chloride solution, and the iron becomes a solid metal
•  but this will not happen:  Zn + MgCl2  >NOT>  Mg + ZnCl  The zinc metal stays zinc metal.  No reaction takes place.

Understanding this is not that important at this point, but I know some of you like to be precise just so you know that some reactions are likely to happen, and some are not.

Do these worksheets:
http://www.sciencegeek.net/Chemistry/chempdfs/EquationsWorksheet4.pdf


and http://www.sciencegeek.net/Chemistry/chempdfs/EquationsWorksheet5.pdf
[some of these reactions  also won't really happen, as you will see from the answer sheet;
don't worry about trying to predict this with the solubility table, just do the switcharoo >>

AB + CD ->  AD +  CB   and make sure your compounds are metalfirst,thennonmetal.
........................................
Hope you are enjoying the labwork, and putting it together with the worksheets, and starting to "get it."

I appreciate your feedback;  we are in the home stretch of chemistry; keep up the good work,