In chemistry we've been learning about heat and energy. We found that heat is a factor of energy. Heat is the energy transferred between you things that don't have a equal temperature and are touching. The symbol for heat is a lower case letter q (q). The scientific measurement units are Joules (J), KiloJoules (kJ0, Calorie(cal), and Calories ((Cal) food). Specific heat is an object ability to absorb or release heat without it chemically change. We also learned the there is a equation that relates all these things.
- q= the heat absorbed (+) or released (-)
- m= Mass
- c= Specific heat
- (triangle)T= change in temperature
You determine the mass by mass the object you are using. You find the change in temperature by subtracting the final temperature from the initial temperature.
This equation came into play when we did a lab called " Determining the Specific Heat of Metals". In this lab we used a Bunsen burner, tongues, thermometer, iron and copper fittings, balance, graduated cylinder, and a home made calorimeter. First, we had to fill the calorimeter with 200 g of water and place the thermometer in the water and record the temperature. After we massed the fittings we used the tongues to hold each fitting or the burner we waited until the metal change colors to predict the temperature of the fitting.
Once we recorded our predicted temperature we plunged the hot fittings into the cups or water. As we watched the thermometer we noticed the temperature continued to rise but it wasn't a hug jump. After we had all or information recorded We used the formula to calculate the heat and specific heat. Resulting from this lab I learned that the energy really does bounce back and forth through objects that have come into contact with each other until they are even and just because something is really hot doesn't mean the temperature or change dramatically.
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