Hot & Cold Water

Opening Predictions:

1. Water at two temperatures are mixed together. The two temperatures are 50 C and 10 C. Please make a selection that best fits what you believe will happen to the temperature once they are mixed.
1. The temperature of the “colder” water will be subtracted from the “warmer” water, resulting in a final water temperature of 40 C.
2. The temperatures of the two waters will be averaged, resulting in a final temperature of 30 C.
3. The temperatures of the two will be added, resulting in a final temperature of 60 C.

Please explain the reasoning behind your choice:

1. 2. In this type of experiment ________________ energy is transferred. For this type of energy transfer,  what do you believe is the direction of transfer?

1. From “hot” to “cold”
2. From “cold” to “hot”
3. There is an equal transfer of the two materials.

Please explain the reasoning behind your choice:

Please create a sketch, procedure and data table to produce evidence through experimentation for question #1.

Claim - Evidence - Reasoning - WHITEBOARD SUMMARY

You've collected data. Now, let's go back to the original question of what will happen when water at two different temperatures is mixed.

1. What is your claim (based upon data)?
2. How can your data collected (evidence) support your claim?
3. Reasoning - Why does your evidence support your claim?

Note: Chapter 4 of the Matter & Energy book provides additional background information.

Each person please submit for next class!
Class Data