Percent Composition Lab
Tuesday, February 1, 2022
12:37 PM
Unit 4 Chemical Reactions Page 1
Part: sugar
Whole: gum piece
1.
2.
3.
4.
Weigh the gum with wrapper on
Chew the gum until taste is gone
Weigh the gum again on wrapper
Calculate after weight on the before amount of sugar
Name/Weight Before
After
Difference
Kasia
8.2g
3.8g
4.4g
Armon
8.3g
3.9g
4.4g
Luke
8.2g
3.8g
4.4g
Allison
8.2g
3.8g
4.4g
Average
8.225g
3.825g
4.4g
4.4/8.225=0.535
53.5% sugar
There may have been small differences in the four gum pieces before chewing
Some people also may have chewed faster than others and gotten the sugar out faster.
Unit 4 Chemical Reactions Page 2