Wednesday, November 3, 2010

Wednesday, November 3, 2010

Today we went straight to the Math Computer Lab to work on our web assigns. To do one of the web assigns you needed to know how to balance equations and classify reactions. If you are still having trouble balancing equations then you should look at past blogs, textbook pages 60-61, and packet pages 1-4. Classifying reactions was a newer concept that I’m going to explain.

Synthesis:

· A + B = AB

· Formation of more complex compounds from simpler compounds

· Formation of compounds from its elements

Decomposition:

· AB = A + B

· Breaking down of more complex compounds into simpler compounds

· Opposite of synthesis

Combustion:

· REMEMBER O2

· Involve reaction of a substance with oxygen gas (O2)

· Some combustion reactions are also synthesis

Single Replacement

· Metal: A + BC = AC + A

· Non-metal: A + BC = BA + C

· If there is one element by itself on either side

· Replaces one of the ions in the compound

Double Replacement:

· AB + CD = AD + BC

· Compounds on both sides

· Precipitation Reaction and acid-base neutralization reactions

All this information and more can be found in packet pages 5-6. If you need additional information you can visit this site:

http://misterguch.brinkster.net/6typesofchemicalrxn.html

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