Lab Practical 1 review

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Author:
tenorsextets
ID:
73620
Filename:
Lab Practical 1 review
Updated:
2011-03-18 00:14:42
Tags:
Biology lab practical
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  1. Rule for converting metric units:
    • Going up list– divide
    • Going down list– multiply
  2. How to calculate deviation:
    Experimental value (value obtained from experiment) – Theoretical value (expected result)
  3. Positive deviation:
    overshoot
  4. Negative deviation:
    undershoot
  5. % Error:
    • [(experimental value–theoretical value) ÷ theoretical value] × 100
    • OR
    • (deviation÷theoretical value) × 100
  6. Benedict's test color results:
    • Blue: none
    • Green: some
    • Yellow-Red: a lot
  7. Lugol's test color results:
    • Dark blue/black: yes
    • Brownish yellow: no
  8. Biuret test color results:
    • Violet: yes
    • Blue/no change: no
  9. Sudan III test color results:
    • No change: no
    • Faint orange: some
    • Bright orange: lots
  10. Benedict's tested for:
    Carbohydrates
  11. Lugol's tested for:
    Starch
  12. Biuret tested for:
    Proteins
  13. Sudan III tested for:
    Lipids
  14. What makes an organic molecule more soluble?
    less carbons and more oxygens. oxygen to carbon ratio matters.

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