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Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
Biology - Chemistry of Life 1112
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Biology - Chemistry of Life 1112

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Transcript

  • 1. Chemistry for Biology Biology ~ Edgar
  • 2. True or False
    • Table salt, water, and carbon are all compounds.
    • The smallest particle of an element is a molecule.
    • A bathtub full of lukewarm water may hold more heat than a teakettle full of boiling water.
    • If the atoms in a molecule share electrons equally, the molecule is said to be non-polar.
    • Ice floats because water molecules in ice are more tightly packed then in liquid water.
    • Atoms in a water molecule are held together by the sharing of electrons.
    • If solution-A has a pH of 2 and solution-B has a pH of 5 then solution-B is a stronger base then solution-A
    • An atom that has gained or lost electron is called an ion.
    • Hydrogen bonds are stronger then covalent bonds.
    • Water is a good solvent in living organisms.
  • 3. Figure 2.1 The hierarchy of biological order from atom to organism
  • 4. Table 2.1 0
  • 5. LE 2-3 Sodium Chlorine Sodium Chloride
  • 6. Figure 2.5 Two simplified models of a helium (He) atom
  • 7.  
  • 8. LE 2-4a 2 2 2 Protons Neutrons Electrons Helium atom Mass number = 4 6 6 6 Protons Neutrons Electrons Carbon atom Mass number = 12 Electron cloud Nucleus 2e – 6e –
  • 9. Figure 2.10 Electron configurations of the first 18 elements
  • 10.  
  • 11. Figure 2.12x Methane
  • 12. Figure 2.12 Covalent bonding in four molecules
  • 13. LE 2-6b Nitrogen (N) Atomic number = 7 Oxygen (O) Atomic number = 8
  • 14.  
  • 15. LE 2-9 A water molecule
  • 16. Figure 2.16 A hydrogen bond
  • 17.  
  • 18. Figure 2.15 A sodium chloride crystal
  • 19. LE 2-7a-1 Transfer of electron Na Sodium atom Cl Chlorine atom
  • 20. LE 2-7a-2 Na  Sodium ion Cl  Chloride ion Sodium chloride (NaCl)
  • 21. LE 2-7b Na  Cl 
  • 22.  
  • 23.  
  • 24.  
  • 25.  
  • 26.  
  • 27. LE 2-10 Hydrogen bond
  • 28. Figure 2.11 0
  • 29. Figure 2.12
  • 30. LE 2-13 Hydrogen bond Ice Hydrogen bonds are stable Liquid water Hydrogen bonds constantly break and re-form
  • 31. LE 2-14 Ion in solution Salt crystal
  • 32.  
  • 33.  
  • 34. Trees and Water Transport
  • 35. LE 2-15 Acidic solution OH  H  H  H  H  OH  H  H  H  OH  OH  OH  OH  OH  H  H  H  H  H  H  Increasingly ACIDIC (Higher concentration of H  ) Neutral solution OH  OH  OH  OH  OH  OH  H  H  Basic solution NEUTRAL  H        pH scale Lemon juice, gastric juice Grapefruit juice, soft drink Tomato juice Human urine Pure water Human blood Seawater Milk of magnesia Household ammonia Household bleach Oven cleaner Increasingly BASIC (Lower concentration of H  )
  • 36. Figure 2.16a 0
  • 37. Figure 2.16b

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