2. Food and Chemistry

3. Objectives  Describe chemical properties.  Name 3 most important elements to life.  Explain how covalent, hydrogen, and ionic bonds are formed.  Define a molecule.  Identify symbols for hydroxyl, amino, ammonia, methyl, and carboxyl.  Discussion oxidation-reduction reactions.  Describe the two divisions of metabolism.  Describe chemical properties.  Name 3 most important elements to life.  Explain how covalent, hydrogen, and ionic bonds are formed.  Define a molecule.  Identify symbols for hydroxyl, amino, ammonia, methyl, and carboxyl.  Discussion oxidation-reduction reactions.  Describe the two divisions of metabolism.

4. Elements  The atom is the __________ unit of an element that still exhibits the properties of that element.

5. Atoms consist of:  Nucleus  ___________  ____________  Electrons  Nucleus  ___________  ____________  Electrons

6. Atomic Number  The atomic number of an atom is the total number of ________________.  The atomic weight of an atom is the total number of protons plus ______________.  Chemical properties of an element are determined by the number of electrons in the _____________ energy level of an atom.  The atomic number of an atom is the total number of ________________.  The atomic weight of an atom is the total number of protons plus ______________.  Chemical properties of an element are determined by the number of electrons in the _____________ energy level of an atom.

7. Periodic Table of the Elements

9. Chemical Bonds  Covalent bonds  Hydrogen bonds  Ionic bonds  Van der Waals bonds  Covalent bonds  Hydrogen bonds  Ionic bonds  Van der Waals bonds

11. Ionic and Van Der Waals  Van Der Waals

12. Bonds cont…

14. Molecules  Molecules are the ________________ identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that _______________.

15. Oxidation-Reduction  Oxidation can be defined very simply as the ____________ of oxygen.  Reduction can be defined as the ____________________ of oxygen  _____________________________________  Process of ____________________________  Life processes that produce or use ________________________

16. Metabolism  Metabolism refers to all the _____________ reactions that occur in a living system. ____________________, or reactions involving the synthesis of compounds. ____________________, or reactions involving the breakdown of compounds.  Metabolism refers to all the _____________ reactions that occur in a living system. ____________________, or reactions involving the synthesis of compounds. ____________________, or reactions involving the breakdown of compounds.

17. Organic Chemistry Chemical Symbols of Representations SymbolRepresents C_________________ atom ____________Hydrogen atom N_________________ atom OOxygen atom ____________Hydroxyl (alcohol) NH3Ammonia NH2________________________ ____________Methyl group COOHCarboxyl (acid)

18. Organic Chemistry  _________________-containing molecules  All carbon atoms have ___________ bonds  Each carbon can connect to: Another carbon A hydroxy An ______________________ group An _____________________ (double bond)  _________________-containing molecules  All carbon atoms have ___________ bonds  Each carbon can connect to: Another carbon A hydroxy An ______________________ group An _____________________ (double bond)

19. Common Hydroxy Acids

20. Reduction - Oxidation