Starting Temperature (oC) Time to Boil (sec) Trial 1 Time to Boil (sec) Trial 2 Time to Boil (sec) Trial 3 Average time to Boil (sec)
Can A - Ice Water 4 oC 255 260 257 257.33
Can B - Tap Water 22 oC 202 204 202 202.66
Can C - Hot Water 50 oC 145 144 144 144.33
Sarah was studying phase change in science class. She believed that cold water would begin boiling sooner than warmer water. Sarah and her father did the following investigation.

Hypothesis: The lower the water’s starting temperature, the quicker the water will start to boil.

Experimental Design: Sarah and her dad used three different water temperatures. They measured 50 ml of water into 100 ml beakers. The temperature of the water was recorded. They placed the beakers in a large pan of water and placed the water on the burner of the stove. Sarah timed how long it took each container to boil. They also ran the experiment three times and took an average of their data. You can see the data in the table above.
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Volume of water
There is no difference in boiling times based on starting water temperature.
The higher the starting temperature, the less time it takes water to boil.
Pan beakers are heated in
Starting water temperature
The lower the starting temperature, the less time it takes water to boil.
Time it takes to boil