To find the mass percent of sugar in a piece of bubble gum Objective Unwrap a piece of gum and place the wrapper on the balance Zero the balance Then place the gum on the wrapper do not let it touch the balance ID: 179233
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Slide1
Bubble Gum LabSlide2
To
find the mass percent of sugar in a piece of bubble gum
ObjectiveSlide3
Unwrap
a piece of gum and
place the wrapper on the
balance. Zero the balance. Then place the gum on the wrapper
(do not let it touch the balance!) Record the mass of the gum in grams.Chew the gum until the sugar is removed (no flavor)Work on handout (Formula Weights and Percents) in the meantime.Mass the gum again and dispose
ProcedureSlide4
Mass of new gum _________
Mass of chewed gum __________
DataSlide5
Calculate mass of sugar:
Mass
of new gum – mass of chewed gum = mass of sugar
Calculate percent of sugar
mass of sugar X 100 = % mass of new gumCalculate Percent ErrorActual value: 3 g sugar
Actual percent sugar:
mass of sugar
X 100 = %
mass of new gumPercent error = % in your gum – actual % X 100= % actual %
CalculationsSlide6
The
mass percent of sugar in my gum was ___________. The actual percent of sugar was __________. My percent error was ____________.
To be more accurate I could (list 2 things)
Conclusion