I performed an experiment recently where I tested the specific heat capacity of different metals in water. The temperature was recorded. The metals were then removed from the beaker and placed into a calorimeter, and the temperature was recorded. Why is the change in temperature inside the calorimeter very small?
Change in temperature is small because heat capacity of metals in general is small compared to water. Still, it depends on some other parameters, like the mass of water in calorimeter and the mass of your metal sample, initial temperature of the sample before putting it into the water etc...but your question is not clear enough so this is all I can tell you.