Question

lee predicted that warm water would boil faster than water at room temperature. he performed an experiment to find out whether warm water (at 100°f) boiled faster than water at room temperature (at 70°f). he recorded his results in the table below.
trial, starting temperature (°f), amount of water (l), time it took to boil (min.)
a, 70, 2, 9
b, 70, 2, 10
c, 70, 2, 9
d, 70, 2, 9 1/2
e, 100, 2, 6
f, 100, 2, 5
g, 100, 2, 15
h, 100, 2, 5 1/2
name two tools lee used to complete his experiment.
does the data shown in the table above support lees prediction? explain why or why not.
lees teacher says that lee should communicate his results to other scientists

Explanation:

1. For the tools question, a thermometer is used to measure temperature and a timer is used to measure the time it takes for water to boil.
2. To check the prediction, we observe that on average, the water starting at 100°F boiled faster than the water starting at 70°F. Trials A - D with 70°F starting temperature have boiling - times of 9, 10, 9.5, 6 minutes respectively. Trials E - H with 100°F starting temperature have boiling - times of 5, 15, 5.5 minutes. Ignoring the outlier of 15 minutes in trial F, the 100°F water generally boiled faster.

Answer:

1. Thermometer, Timer
2. Yes, because on average, water starting at 100°F boiled faster than water starting at 70°F (ignoring the outlier in trial F).