1. EQs: Explain the difference between inorganic & organic. Compare polar and nonpolar molecules and give an example of each.

2. AtomsAtoms & Chemical Bonds Brainpops Chemical Bonds AtomsChemical Bonds

3. The Molecules of Life

4. Major Elements of Life Carbon (C) Hydrogen (H) Oxygen (O) Nitrogen (N) Phosphorous (P) Sulfur (S)

5. Organic Molecules Must contain Carbon and Hydrogen Make up most components of living things Ex-Glucose (type of sugar)

6. Macromolecules Combine with each other and other elements to form MACROMOLECULES: Carbohydrates, Lipids, Proteins and Nucleic AcidsCarbohydrates, Lipids, Proteins and Nucleic Acids

7. Inorganic Molecules Does not contain both carbon and hydrogen non-living substances (can sometimes be found in living things) Examples: Water, Salt, Iron, Carbon Dioxide

8. Water Chemical Formula: H 2 O Structure:

9. Electrons are pulled more towards one side of a molecule than the other, resulting in a positive end (pole) and a negative end (pole). Example: Water, Sugar

10. H2OH2O = Proton (p + ) = Neutron (n o ) = Electron (e - ) 8 protons! 1 proton Two Hydrogen atoms are held to one Oxygen by a weak covalent bond (sharing electrons)

11. Oxygen’s 8 protons are so positive they pull the electrons away from Hydrogen! This results in the oxygen being very negatively charged! The hydrogens have a positive charge because of their proton ++ = Proton (p + ) = Neutron (n o ) = Electron (e - )

12. NONPOLAR Molecules Non polar substances have equal charge distribution (neither end is more + or – than the other) Example: oil, CO 2

13. Hydrogen Bond When water molecules are close together, the + of the H is attracted to the – of the O on another molecule This is called a hydrogen bond.

14. Processing Cornell Notes pull out all essential vocabulary Are the 4 macromolecules organic or inorganic AND why?add this question next to its answer in the notes: Are the 4 macromolecules organic or inorganic AND why? come up with at least 2 more of your own (use critical thinking page to help!) Fill in the summary pyramid then write a 2- 3 sentence summary based on it

15. Essential Questions 1.Explain the difference between inorganic & organic. 2.Compare polar and nonpolar molecules and give an example of each.