Question

mohammed observed that his water boiled much more quickly than his isopropyl alcohol. his peer group suggested some experimental errors that may have caused this to happen. which two experimental errors most likely caused the invalid data?
a. mohammeds procedure was correct, but he tested a type of water that boils more quickly than isopropyl alcohol.
b. mohammed could have mixed up the labels on the containers.
c. the heating vessel or hot plate was not at the same temperature each time.
d. the boiling vessel might have been dirty, so the solutions got mixed.

Explanation:

• Option B: If labels were mixed, he could have thought water boiled faster when it was actually the other liquid.
• Option C: Different heating temperatures would affect boiling times, making data invalid.

Answer:

B. Mohammed could have mixed up the labels on the containers.
C. The heating vessel or hot plate was not at the same temperature each time.