Water and steam are both 100°C when water is boiling, but a burn from steam is worse than a burn from the water. Hypothesize why this is true.”   “A 10 g ice cube, initially at 0 ºC, is melted in 100 g of water that was initially 20°C. After the ice has melted, the equilibrium temperature is 10.93 ºC. Calculate:”   “The total heat lost by the water (the specific heat for water is 4.186 J/g/K).”   “The heat gained by the ice cube after it melts (the specific heat for ice is 2.093 J/g/K).”

“Pre-Lab Questions”

1. “Water and steam are both 100°C when water is boiling, but a burn from steam is worse than a burn from the water. Hypothesize why this is true.”
   
   

1. “A 10 g ice cube, initially at 0 ºC, is melted in 100 g of water that was initially 20°C. After the ice has melted, the equilibrium temperature is 10.93 ºC. Calculate:”

1. “The total heat lost by the water (the specific heat for water is 4.186 J/g/K).”
   
   

1. “The heat gained by the ice cube after it melts (the specific heat for ice is 2.093 J/g/K).”

1. “The heat it took to melt the ice (Hint: it takes 334 J of heat energy to melt 1 g of ice).”

1. “Inside a calorimeter is 100 g of water at 39.8°C. A 10 g object at 50°C is placed inside of a calorimeter. When equilibrium has been reached the new temperature of the water and metal object is 40°C. What type of metal is the object made from?”
   
   

“Experiment 1: Latent Heat”

“Table 2: Temperature of Frozen Water Over Time”

“Table 3: Temperature of Boiling Water Over Time”

“Post-Lab Questions”

1. “Describe what happened to the temperature of the water as it was melting.””
   
   

1. “Hypothesize how the temperature of the water changed as it was freezing.”
   
   

1. “What happened to the temperature of the water after it melted?”
   
   

1. “What happened to the temperature of the water as it was heating?”
   
   

1. “What happened to the temperature of the water after it started boiling?”

1. “What was the temperature of your boiling water? The standard boiling temperature for water is 100°C. Does your measurement agree with this? Explain why or why not.”
   
   

1. “Explain why temperature does not change during a phase change. Where does the heat energy go if not into increasing or decreasing temperature?”

“Experiment 2: Conservation of Heat Energy”

“Table 4: Water Volume and Temperature Data””

“Post-Lab Questions”

“Table 5: System Heat Data””

1. “Given the initial and final volumes of the experiment, determine the initial mass of the water and the mass of the ice cube. Show your work. Record your answer in Table 5.”
   
   
2. “Given the initial and final temperatures, calculate the change in temperature of the water and ice after it melted. Show your work. Record your answer in Table 5.”
   
   
3. “Calculate the heat lost by the water and gained by the ice cube after it melted. Show your work. Record your answer in Table 5.”
   
   
4. “Use the conservation of energy to determine the amount of heat energy that it took to melt the ice. Show your work. Record your answer in Table 5.”
   
   
5. “It takes 334 J of heat energy to melt 1 g of ice (this is called the latent heat of fusion). Use this to predict the amount of energy it should take to melt your ice cube. Show your work. Record your answer in Table 5.”

1. “Compare this theoretical value to the value you calculated in Post-Lab Question 3 with a percent error calculation. Show your work. Record your answer in Table 5.”

“Experiment 3: Specific Heat”

“Table 6: Steel Bolt Specific Heat Data””

“Post-Lab Questions”

1. “The heat lost by the hot bolt is equal to the heat gained by the water in the calorimeter. Use the equations provided above and what you know about heat to solve for the specific heat (C) of the steel. Show your work.”
   
   
   
2. “What is the specific heat of steel from Table 1? Find the percent error for your calculated specific heat relative to this accepted value. Show your work.”
   
   
3. “What was the difference between your calculation and the actual specific heat of steel? How could you improve the experiment to reduce this error?”

1. “Does the air inside the calorimeter also gain heat? Why do we exclude this from data calculations?”
   Click here to enter text.

“Insert photo of your experimental setup with your name clearly visible in the background:”