Question

3) What range in temperature in Degrees Celsius is practical for each of the following

A.) A hot summer day in Wisconsin
B.) A cold autumn day in Wisconsin where puddles of water have ice forming on them
C.)The body temperature of a person who has a low fever

4) Describe the difference in kinetic energy, potential energy, and intermolecular attractive forces in solid water (ice), cold & hot liquid water, and gas (water vapor).

5) Assume your left hand came into contact with 1.0 gram of liquid water at 100° C in your right hand came in contact with 1.0 gram of water vapor (steam) at 100° C. Why would a burn from steam at a 100° C be more severe than a burn from one liquid of water at 100° C

6) Raising the temperature of 10.0 grams of water from 10.0° C to 20.0° C requires 100.0 calories of energy. While raising the temperature of 10.0 grams of aluminum from 10.0° C to 20.0° C requires 22 calories of energy. Why are more calories of heat required to heat the water?

Answer 1

3)A.) A hot summer day in Wisconsin - 30-38°C

B.) A cold autumn day in Wisconsin where puddles of water have ice forming on them - 0-4°C

C.)The body temperature of a person who has a low fever - 37-38°C

4) Solid water (ice) has the highest potential energy, lowest kinetic energy, and strongest intermolecular attractive forces. Cold liquid water has more kinetic energy than solid water, but less potential energy and weaker intermolecular attractive forces than solid water. Hot liquid water has more kinetic energy and potential energy than cold liquid water, but weaker intermolecular attractive forces than cold liquid water. Gas (water vapor) has the lowest potential energy, highest kinetic energy, and weakest intermolecular attractive forces of all three states of water.

5) Steam is at a higher pressure than liquid water which can make it significantly more dangerous. The higher pressure of steam causes the heat to be released more quickly and penetrate tissue much deeper than the same temperature of liquid water.

6) Water requires more calories of heat to raise its temperature because it takes more energy to break the hydrogen bonds between the molecules in the liquid state than it does for aluminum atoms to move further apart in order to maintain their liquid state.