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Chemistry of Life

Chemistry of Life. Basic Chemistry, Water, Organic Molecules, Energy Changes, Enzymes. Basic Chemistry. What is it?. Matter: Takes up space and has mass Element: Substance that cannot be broken down to other substances by chemical reactions.

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Chemistry of Life

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  1. Chemistry of Life Basic Chemistry, Water, Organic Molecules, Energy Changes, Enzymes

  2. Basic Chemistry

  3. What is it? • Matter: Takes up space and has mass • Element: Substance that cannot be broken down to other substances by chemical reactions. • Compound: Substance consisting of two or more elements in a fixed ration

  4. The most common ones… • 25 of 92 natural elements are essential to life • C, O, H, N = 96% of all living matter

  5. Elements Behavior is due to structure of it’s atom • Atomic Particles • Atomic Number and Mass • Isotopes • Behavior due to Valence Electrons

  6. Non-polar covalent Polar covalent Covalent Bonds

  7. Ionic Bonding • Salts: Anion & Cation

  8. Hydrogen Van der Waals Other Types of Bonding

  9. Chemical Reactions • Make and Break Bonds • Must remain balanced

  10. Water

  11. Water molecule

  12. Hydrogen Bonding • Cohesion • Adhesion • Surface Tension • Crystaline Solid • Solvent • Moderation of Temperature • Evaporative Cooling

  13. Surface Tension • Waters ability to stretch without breaking

  14. Adhesion to matter • Capillary action • Capillaries in body • Xylem in plants

  15. Solid Crystal formation • Lattice Structure • Density • Insulation for bodies of water

  16. Solvent • Universal solvent • Dissolves salts & sugars, vital for life functions

  17. Temperature Moderation

  18. Evaporative Cooling

  19. Water is Hydrophilic

  20. Dissociation • Acid / Base • Dissociates to form acids or bases • Reversable reaction • Hydronium • Hydroxide

  21. Buffers • pH human blood 7.4 • Regulation vital to survival & bodily function • Example: Carbonic Acid

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