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Chapter 2

Chapter 2. The Chemistry of Life. Atoms – made of. Number of electrons in energy levels: 1 st level – 2 nd level – 3 rd level – TO BE STABLE, outer energy level must be FULL. Elements – in periodic table http://www.ptable.com/#Writeup/Photos.

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Chapter 2

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  1. Chapter 2 The Chemistry of Life

  2. Atoms – made of

  3. Number of electrons in energy levels: 1st level – 2nd level – 3rd level – • TO BE STABLE, outer energy level must be FULL

  4. Elements – in periodic table • http://www.ptable.com/#Writeup/Photos

  5. Naturally occurring elements – ____ • ____ of ____ in living things • ____ of ____ = 96% of all elements in living things • =

  6. Each box tells 7 pieces of info

  7. Chemical Bonds • Ionic – transfer electrons • Ex. NaCl

  8. Covalent – share electrons; forms a molecule • Ex. Water

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