Chemistry Notes

2,228 views
2,066 views

Published on

Published in: Technology, Education
0 Comments
2 Likes
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
2,228
On SlideShare
0
From Embeds
0
Number of Embeds
21
Actions
Shares
0
Downloads
89
Comments
0
Likes
2
Embeds 0
No embeds

No notes for slide

Chemistry Notes

  1. 1. Chemistry Fundamentals Life is Chemical
  2. 2. Atoms vs Molecules <ul><li>Smallest unit of matter is the Atom or the Molecule </li></ul><ul><ul><li>Atoms have only 1 element </li></ul></ul><ul><ul><li>Molecules have more than 1 kind of element joined together chemically </li></ul></ul>
  3. 3. Periodic Table of the Elements <ul><li>Single type of atom </li></ul><ul><li>92 naturally occurring, humans have made a few more </li></ul>
  4. 4. Atomic Symbols <ul><li>1 or 2 letters representing the atom </li></ul><ul><ul><li>C – Carbon </li></ul></ul><ul><ul><li>H – Hydrogen </li></ul></ul><ul><ul><li>O – Oxygen </li></ul></ul><ul><ul><li>N – Nitrogen </li></ul></ul><ul><li>Most commonly occurring elements in Biology! </li></ul>
  5. 5. Molecule <ul><li>Various types of atoms joined together to make a substance that does not resemble the two elements </li></ul><ul><li>Hydrogen – gas </li></ul><ul><li>Oxygen – gas </li></ul><ul><li>Water - liquid </li></ul>
  6. 6. Representing Molecules <ul><li>Chemical Formula use chemical symbols and numbers to represent a compound </li></ul><ul><li>H 2 O </li></ul><ul><li>Structural Formula uses chemical symbols and lines to represent </li></ul><ul><ul><li>a compound </li></ul></ul>
  7. 7. Ex: Glucose <ul><li>Chemical Formula C 6 H 12 O 6 </li></ul><ul><li>Structural Formula </li></ul>
  8. 8. Chemical Bonds <ul><li>Atoms combine to form molecules by sharing or trading electrons and forming links between them. </li></ul>
  9. 9. Bonding <ul><li>Chemical bonds are very stable </li></ul><ul><ul><li>Forming a bond stores energy </li></ul></ul><ul><ul><li>Breaking a bond releases energy </li></ul></ul><ul><li>KEY IDEA!!! </li></ul>
  10. 10. Octet Rule <ul><li>The number of bonds depends on the number of electrons in the valence (outermost) shell </li></ul><ul><li>Valence Electrons = Those electrons in the outermost shell/ring of the atom </li></ul><ul><li>All atoms like to form an octet (exception of Hydrogen,which likes 2) </li></ul>
  11. 11. Octet Rule Practice 5 Nitrogen 6 Oxygen 1 Hydrogen 4 Carbon # bonds? # needed? # Valence Electrons Element
  12. 12. Biochemistry Chemistry of Biology
  13. 13. Organic Vs Inorganic Molecules <ul><li>Organic Molecules – occur in living things </li></ul><ul><li>Generally larger and more complicated in shape than inorganic molecules </li></ul><ul><li>Always have Carbon & Hydrogen </li></ul><ul><li>Usually have Oxygen </li></ul><ul><li>Sometimes have Nitrogen </li></ul><ul><li>CHON </li></ul>
  14. 14. Four types of Organic Molecules Nucleic Acid Lipid Carbohydrate Protein Found Parts Look For  Use Type
  15. 15. Four types of Organic Molecules Nucleic Acid Lipid Carbohydrate Meats Amino acid Nitrogen Building block Protein Found Parts Look For  Use Type
  16. 16. Protein
  17. 17. Four types of Organic Molecules Nucleic Acid Lipid Sugar/ starch Glucose 5/6 carbon ring Energy Carbohydrate Meats Amino acid Nitrogen Building block Protein Found Parts Look For  Use Type
  18. 18. Carbohydrates
  19. 19. Four types of Organic Molecules Nucleic Acid Fats/ waxes Glycerol and Fatty Acids “ E” shape Cell Membrane, Organ protection Energy Storage Lipid Sugar/ starch Glucose 5/6 carbon ring Energy Carbohydrate Meats Amino acid Nitrogen Building block Protein Found Parts Look For  Use Type
  20. 20. Lipid
  21. 21. Unsaturated vs Saturated Fatty Acids
  22. 22. Unsaturated vs Saturated Fats
  23. 23. Four types of Organic Molecules DNA Phosphate, 5 carbon sugar and nitrogen base 3 parts Information Storage “blueprints” Nucleic Acid Fats/ waxes Glycerol and Fatty Acids “ E” shape Cell Membrane, Organ protection Energy Storage Lipid Sugar/ starch Glucose 5/6 carbon ring Energy Carbohydrate Meats Amino acid Nitrogen Building block Protein Found Parts Look For  Use Type
  24. 24. Nucleic Acid
  25. 25. DNA
  26. 26. Making Chains DNA Nucleic Acid Starch Carbohydrate Protein Amino Acid Chain Single Unit
  27. 27. Monomer vs Polymer
  28. 28. Monomer vs Polymer Disaccharide, Trisaccharide, Polysaccharide or Starch Carbohydrate Polypeptide or Protein Amino Acid Polymer (Long Chain) Monomer (Single Unit)
  29. 29. Dehydration Synthesis and Hydrolysis
  30. 30. <ul><li>Dehydration Synthesis </li></ul><ul><ul><li>Remove water to form long chains </li></ul></ul><ul><ul><ul><li>Simple sugars into starches </li></ul></ul></ul><ul><li>Hydrolysis </li></ul><ul><ul><li>Add water to break chains </li></ul></ul><ul><ul><ul><li>Polysaccharides into monosaccharides </li></ul></ul></ul>
  31. 31. Lipids: A Special Case <ul><li>Not a polymer, but still use dehydration synthesis. </li></ul>

×