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15 cards from this deck
Checking if a substance is present or absent
Qualitative: presence/absence; Quantitative: amount/concentration
Iodine solution
Iodine molecules fit into spiral structure of starch
Blue-black
Red-yellow
Benedict's or Fehling's solution
Glucose, fructose, maltose
Blue to red
Yes, in very hot water bath for 5 minutes
Biuret reagent
Purple-violet
No heating required
Brown paper test
Permanent translucent stain on paper
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