biology

• test for starch 


  iodine - from orange brown to blue black
• test for sugar


  benedict's - light blue to green, yellow, orange, brick red
• test for lipids 


  susan 111 - stains red
• test for lipids (emulsion test)


  ethanol - colourless to cloudy emulsion
• test for proteins 


  biuret - blue to lilac / purple