For each experiment, can you please give a descriptions, what materials you used

Question

For each experiment, can you please give a descriptions, what materials you used, what you observe in each experiment and a conclusion about each experiment. Please and thank you.... Your help is greatly appreciated.

Experiment 1
1. Take two Styrofoam cups, partially fill them with equal amounts of cold water, and drop equal amounts of ice into each cup to obtain a mixture of ice and water.
a. Stir the water and ice mixture in one of the cups vigorously with a nonmetallic stirrer until all of the ice has been melted. Note the time that it takes to melt all the ice. b. Set the second cup aside and observe it every 10 minutes or so until all the ice has melted. Note the time that it takes for all the ice to melt.

c. How do the times compare? and where the energy comes from to melt the ice in the cup?

Experiment 2:

Fill a Styrofoam cup with very hot water ( or coffee). Take objects made of different materials, such as a metal spoon, a wooden pencil, a plastic pen, or a glass rod. Put one end of each object into the water and make these observations.
    a. How close to the surface of the water do you have to hold the object for it to feel noticeably warm to the touch?

    b. From your observations, which material would you judge to be the best conductor of heat? Which is the worst? Can you rank the materials according to the ability to conduct heat?


For each experiment, can you please give a descriptions, what materials you used, what you observe in each experiment and a conclusion about each experiment. Please and thank you.... Your help is greatly appreciated.

Experiment 1
1. Take two Styrofoam cups, partially fill them with equal amounts of cold water, and drop equal amounts of ice into each cup to obtain a mixture of ice and water.
a. Stir the water and ice mixture in one of the cups vigorously with a nonmetallic equal amounts of cold water, and drop equal amounts of ice into each cup to obtain a mixture of ice and water. stirrer until all of the ice has been melted. Note the time that it takes to melt all the ice. b. Set the second cup aside and observe it every 10 minutes or so until all the ice has melted. Note the time that it takes for all the ice to melt.

c. How do the times compare? and where the energy comes from to melt the ice in the cup?

Experiment 2:

Fill a Styrofoam cup with very hot water ( or coffee). Take objects made of different materials, such as a metal spoon, a wooden pencil, a plastic pen, or a glass rod. Put one end of each object into the water and make these observations.
    a. How close to the surface of the water do you have to hold the object for it to feel noticeably warm to the touch?

    b. From your observations, which material would you judge to be the best conductor of heat? Which is the worst? Can you rank the materials according to the ability to conduct heat?

Explanation / Answer

1)
1st cup will take much less time as compared to the seconf cup
iN FIRST CASE THE ENERGY COMES FROM THE VIGOUROUS STIRRING and in 2nd case energy comes from sorroundings

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