PLEASE HELP I HAVE 4 DAYS WITH 99 OVERDUE
These materials are needed:

soda crackers
Benedict's solution
4 test tubes
beaker or small saucepan
burner; either a stove burner, an alcohol lamp, or a Bunsen burner


Start a water bath and heat it to a very gentle boil. This may consist of a beaker 1/2 full of water heated by an alcohol lamp, a Bunsen burner, or a small saucepan 1/2 full of water heated on a stove burner.
Pour about 1/4" (or about 3 ml) of Benedict's solution into each of the four test tubes. Mark these test tubes as "1", "2", "3", and "4" with a black crayon or pencil.
Finely crush 1/4 of a soda cracker. Mix the crushed cracker thoroughly with a little water until it becomes a paste. Pour this cracker-water mixture into test tube #1. Cover the test tube with your thumb, and shake it well.
Rinse your mouth well with water. Chew 1/4 of a soda cracker in your mouth for about 5 seconds, and then spit the cracker into test tube #2. Cover the test tube with your thumb, and shake it well.
Rinse your mouth well with water. Chew 1/4 of a soda cracker in your mouth for about 30 seconds, mixing it well with saliva, then spit the cracker into test tube #3. Cover the test tube with your thumb, and shake it well.
Rinse your mouth well with water. Chew 1/4 of a soda cracker in your mouth for about 60 seconds, mixing it well with saliva, then spit the cracker into test tube #4. Cover the test tube with your thumb, and shake it well.
Place all 4 test tubes in the hot water bath for about 3 minutes or until they just begin to boil. Carefully remove the test tubes from the water bath and note the color of each. Based on the color changes, which test tube had the least glucose present? Which one had the most glucose present? Why?


Carefully note the color changes in each solution sample:
No Saliva
Chewing 5 seconds
Chewing 30 seconds
Chewing 60 seconds