# The Relationship Between Heat and Temperature

When heating a substance, we must add a certain amount of heat to raise the temperature a specified amount. This capacity to take in heat is unique to each substance and is defined with the symbol C.
1 Joule
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### Ch 3, Lesson C, Page 1 - The Relationship Between Heat and Temperature

• If we add a Joule of energy to one gram of liquid water at 20oC it will raise the temperature to about 20.2oC.
• If we add 1 Joule of energy to one gram of liquid mercury at 20oC it will raise the temperature to about 27oC.
• If we add 1 Joule of energy to one gram of air at 20oC it will raise the temperature to about 21oC.
• This capacity for absorbing heat is called the heat capacity or the specific heat.
• Flip the page and we’ll show you the formal definitions for heat capacity and specific heat.
• Then, we’ll show you how to use them to solve problems.