I used a hot plate to heat up 100ml of hot water to 100 degrees celsius. I then

Question

I used a hot plate to heat up 100ml of hot water to 100 degrees celsius. I then placed the 100 ml of heated water into a graduated cylinder. Next I placed the graduated cylinder in refrigerator. Then I measured the volume every time the water had a 10 degrees change in temperature. I did this until the water has cooled to 20 degrees celsius. I repeated this three times in order to have three separate trials with three separate sets of data.

-What are the units I measured for volume and what sized graduated cylinder would I have used for this experiment?

-Looking at the precision of my volume data, what were the graduations on my calibrated cylinder?

-Where there any shortcomings in my procedures?

Explanation / Answer

The volume of water would be measured in "ml".

250 ml sized graduated cylinder will be enough for this experiment.

The calibration is as follows:

Starting from " 50 ml" with each smallest divison "5ml" it would be calibrated upto "250 ml".

When you heated at 100 degrees celcius; some of the quantity of water may transform into steam. When measuring by graduated cylinder this volume of steam can't be measured; thus resulting error.

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