1. Acetaldehyde Regents Chemistry-Molecule Project 2009Presented by Brett ApRoberts and Siggi Holmgren

2. Molecule Statistics Common NameAcetaldehyde Systematic NameEthanal Molecular FormulaC 2 H 4 O Gram Formula Mass 44.05 g/mol Elements in Molecule Carbon, Oxygen, and Hydrogen Types of Bonds in Molecule Single and Double Covalent Bonds

3. Bonding in Ethanal Carbon can make four covalent bonds-Four unpaired electrons Hydrogen can make one covalent bonds-One unpaired electron Oxygen can make two covalent bonds-Two unpaired electrons 1

4. Bonding and Geometry 2 4 3

5. Where can we find Ethanal? Alcohol is converted into Ethanal in human metabolism. Yeast and bacteria convert Ethanal to acetic acid in the vinegar making process. Used in the production of wood and bookbinding glues known as polyvinyl acetates

6. Relevance of Ethanal Vinegar is a very common food in most cultures around the world.

7. Importance to Human Survival Ethyl alcohol, found in foods and beverages, must be broken down into Ethanal in our bodies or it would reach a toxic level that would be lethal.

8. Metabolic Oxidation of Ethanal 5 This is the reaction pathway in our bodies and in vinegar production

9. Life without Ethanal I think food with be less interesting if Ethanal because we wouldn’t have vinegar for our salad dressing, pickles, or countless other recipes that include this sour product. Ethanal is a colorless liquid that has a stong “green apple” smell and without it we might not have this flavor for our candy, gum, etc.

10. When is Unity Benefitial? When carbon, hydrogen, and oxygen bind together in Ethanal all of the atoms have full valence shells and benefit in being more stable than existing as atoms alone. Since Ethanal reacts with oxygen to form acetic acid, the atoms can be more stable (benefit) when bonded together in acetic acid.

11. Bibliography 1.The Alkane Series: Building Them From Scratch http://www.green-planet-solar-energy.com/electron-dot-diagram.html Accessed 12/06/09 2.Wikipedia Commons File:Acetaldehyde-2D.png http://commons.wikimedia.org/wiki/File:Acetaldehyde-2D.png Accessed 12/06/09 3.Background: Ethanol's Journey Through Your Body http://www.biochem.arizona.edu/classes/bioc462/462bh2008/462bhonorsprojects/462bhonors2 06/lowej/Acetaldehyde/ingestalcohol2.htm Accessed 12/06/09 4.The Race Equity Project http://lsnc.net/equity/category/environmental-justice/ Accessed 12/06/09 5.Science Aid-Alcohols http://scienceaid.co.uk/chemistry/organic/alcohols.html Accessed 12/31/09 6.International Agency for Research for Cancer http://monographs.iarc.fr/ENG/Monographs/vol71/mono71-11.pdf Accessed 12/31/09