2. When hot plate is at maximum heat, add two ice cubes (enough for bottom of container, no ice cube is sitting onto of another ice cube) into a 250ml beaker.
3. Immediately, place the 250ml beaker onto the hot plate and start recording time with stopwatch.
4. When all ice melts, record length of time on data table below.
5. Start recording time and stop when you see full boiling occurring. Record time on data table.
6. Start recording again and stop when only a little amount of "water" is at bottom of container. Theoretically, we should not stop recording time until all "water" is removed. However, I am afraid that the glass beaker will crack (mostly not since it is Pyrex).
Data Table
1. Length of time for solid to melt: __________________
2. Length of time from liquid phase to start of rolling boil: ______________________
3. Length of time after rolling boil started and "all liquid is gone": ______________
Observations:
Questions:
Which took the longer time (i.e. needing the most energy)?