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Biochemistry

Biochemistry

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Biochemistry

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  1. Biochemistry Chapter 2 Pages 34-57

  2. Expectation Sheet • ????? • concerns

  3. WKST 2-1 • Basic unit of matter • Parts of an atom = • Location of each • Charges associated with each • Element, compound, molecule • Isotopes • Bonds = ________ & ___________ • Van der Waals forces

  4. Activity 1: Vocabulary • Check your answers with your partner • Do we need to review or clarify any? • Difference between molecular & structural formulas • Can you think of something that is dehydrated? • What do you hydrate?

  5. IONS • Def: • Charge

  6. Isotopes • Change in number of __________ • Atomic mass accounts for isotopes- HOW?

  7. pH scale • 1-14 • Low #s are • Higher #s are • Based on concentrations of which ions? • What does “7” signify? • What do you think most solutions in our bodies should be? • What helps to keep things that way?

  8. Review of The Atom • AMU Location Charge • Proton • Neutron • Electron • Proton number is equal to the identity • Of the atom 1-H, 6-C, 79-Au

  9. Element is a substance that ordinarily can not be broken down chemically to form simpler kinds of matter • Examples: Oxygen O • Hydrogen H • Carbon C • The family the atom falls into is ultimately based on its proton number

  10. Name Symbol Atomic Valence Number • Number Electrons Needed • Hydrogen H 1 • Oxygen O 8 • Nitrogen N 7 • Carbon C 6 • Phosphorus P 15 • Sulfur S 16

  11. HONC rule • H • O • N • C

  12. Are you ready to start act. 4 next time? • Have you read it? • Did you download the data table?

  13. Representations of atoms/compounds • Lewis dot diagrams • Models • Sketches / drawings

  14. Sketch • Atom of hydrogen • Atom of Oxygen • Molecule of water

  15. Models • CH4 = Methane

  16. WATER = H2O

  17. Ethyl alcohol • C2H5OH

  18. Carbon Dioxide • CO2

  19. Answer the questions 2B • Now try the models for • propanol • Ethane • Ethene • Amonia