Lab: Calorimetry and Specific Heat Assignment: Reflect on the Lab

A student who did the same experiment that you did determined the specific heat for all of the metals. His values were all 0.10 to 0.20 less than the actual specific heat values. Select all possible sources of this error listed below.

The metals were not heated to 100°C. The metals cooled before they were added to the water. The thermometer was not completely submerged in the water while reading. The calorimeter was not sealed properly, so heat escaped.

Considering only specific heat, _______ would be the most ideal for use in cookware. However, compared to the other options, lead is too ________ Considering everything, ______________ or __________, would make the best cookware and therefore may be the best choices overall

lead dangerous and heavy aluminum, iron

First, you measured the ______ of the metal and the water inside the calorimeter. Then, you ______ the metal and added it to water in the calorimeter. After heat transferred from the metal to the water, you measured the ______ of both materials.

mass heated temperature change

Based on the table above, _____ oil would transfer heat the best because its specific heat is the ________

sesame lowest

You computed the specific heat for each of the four metals using the formula below: mr001-1.jpg Check all items that you used, either directly or indirectly, each time you did this computation.

the first law of thermodynamics (heat lost by a metal equals the heat gained by the water) the ability of heat to flow from a hot object to a cooler one masses for the metal and the water in the calorimeter temperature changes for the water and the metal the known specific heat of the water

Now you need to put handles on your cookware! You have five different options, including metals and nonmetals such as wood. Based on specific heat, which material would be the best choice?

the material with the greatest specific heat

The buret clamp was used to stabilize the _______, and the beaker was used to stabilize the __________ Why did you use two coffee cups during the experiment instead of just one cup?

thermometer, calorimeter to prevent heat from escaping from the calorimeter