EXPERIMENT QUESTIONS
1. (a) TEST FOR REDUCING SUGAR:
FOOD SOURCE: Glucose (monosaccharide)
CHEMICAL USED: Benedict’s solution (blue)
HEAT REQUIRED: Yes (thermostatically controlled water bath)
+ RESULT: Colour change BLUE to BRICK RED
- RESULT: No colour change (stays blue)
CONTROL: Water + Benedict’s (non-reducing sugar)
PURPOSE OF CONTROL: Acts as a comparison
1. (b) TEST FOR STARCH:
FOOD SOURCE: Potato/ Bread
CHEMICAL USED: Iodine (red/yellow), using a dropper due to small volume needed
HEAT REQUIRED: No
+ RESULT: Colour change RED/ YELLOW to BLUE/BLACK
- RESULT: No colour change (stays red/yellow)
CONTROL: Water and Iodine
1. (c) TEST FOR... (More)