The purpose of the lab is to calculate the percent of sugar found in bubble gum using percent composition (also called percent by mass).
Electronic Balance Bubble Gum Bubble Gum Wrapper Safety
Precautions: Do NOT throw bubble gum wrappers in sinks or on the floor! Wrappers must be saved and used to measure the mass of the gum before and after chewing it as gum is NOT to be placed directly on the balance. Gum will be placed on the wrapper before and after chewing it. Finally, chewed gum and the wrapper belong in the trash at the end of the lab – NOT underneath a desk, in the sink, or on the floor (or on the bottom of someone’s shoe)!
1. Obtain a piece of bubble gum.
2. Use a balance to determine the mass of the wrapped bubble gum. Record the mass in the data table.
3. Unwrap the piece of gum and place the wrapper on the balance. Record the mass in the data table.
4. Chew a piece of gum for fifteen minutes to dissolve and remove the sugar from the gum. While waiting for the time, you will answer questions 1 through 5.
5. After fifteen minutes of chewing, the gum should have “lost” most of the flavoring. Place your chewed gum on the wrapper that you weighed earlier. Now place the gum and wrapper on the balance. Record the mass in the data table.
1. Place the chewed gum and wrapper in the trash.
2. Clean up around your station (make sure all the wrappers are in the trash),
After cleaning up, finish your data table and the questions in Formative