Percent sugar in bubble gum lab

Experiment 1Percent Sugar in Bubble Gum Experiment Inventory

Materials 2 Pieces of Sugared Bubble Gum

*Paper Towels

*Calculator

Labware Digital Scale

Weigh Boat

Note: You must provide the materials listed in *red.

EXPERIMENT 1: PERCENT SUGAR IN BUBBLE GUM

In this experiment, you will determine the number of moles of sugar in bubble gum.

LAB SAFETY: If you are diabetic or have allergies to sugar, you are advised not to complete this experiment and to notify your instructor with documentation of your condition.

PROCEDURE

1. Make sure the scale is reading in the grams (g) mode. If you don’t see a small g on the top-right of your screen, push the button on the left-hand side labeled M (for mode) until you see a g.

2. Place your weigh boat on the digital scale.

3. Press the (0/T) button so that your scale reads 0.0 g.

4. Place the two pieces of unchewed, unwrapped sugared bubble gum onto the weigh boat, and determine the mass. Record the data in Table 1 on the Experiment 1 Data Sheet.

5. Chew each piece of bubble gum for at least 1 minute, or chew both pieces for at least 2 minutes.

Hint: Be sure to spit out or swallow all of the sugar from the gum as you chew it. The purpose of chewing the gum is to remove the sugar.

6. After about 2 minutes, collect the chewed gum in a paper towel, and carefully blot the gum to remove excess saliva.

7. Using a clean paper towel, wipe out your weigh boat and place your weigh boat on the scale.

8. Press the (0/T) button so that your scale reads 0.0 g.

9. Transfer the gum to the weigh boat, and determine its mass. Record this value in Table 1 on the Data Sheet.

10. Calculate the mass of sugar (sucrose) dissolved from the gum by subtracting the final mass of the gum from the original mass. Record your data in Table 1 on the Data Sheet.

11. Calculate the percentage of sugar (sucrose) in the gum by dividing the mass of the dissolved sugar by the mass of the unchewed gum and multiply by 100. Record your data in Table 1 on the Data Sheet. When you’re done, take a photo of your experiment set up. Remember to include your name and lab access code handwritten in the background of the photo.

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