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The Chemistry of Life

The Chemistry of Life

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The Chemistry of Life

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  1. The Chemistry of Life Counting Atoms

  2. Three Subatomic Particles:

  3. Atomic Number • The number of protons in an atom • Unique for every element

  4. Atoms are always electrically neutral. This means that protons always equal the electron.

  5. Silicon Nitrogen Zinc 14 p & 14 e 7 p & 7 e 30 p & 30 e How many protons & electrons are in the following atoms?

  6. Mass Number • The number of protons and neutrons in the nucleus • Mass Number – Atomic Number = Neutrons

  7. Potassium Argon Tin 20 n 22 n 69 n How Many Neutrons are in:

  8. Atomic Structure

  9. Lithium

  10. Phosphorus