CE Chem 1010 - Physical Changes

Module 6

Heat, work, and energy all have the same units.

True. They are measured in joules (J).

Heat is equal to the sum of the mass, the change in temperature, and a proportionality constant called the specific heat.

False. Heat is equal to the mass multiplied by the change in temperature and the specific heat capacity.

The heat of fusion of a substance is proportional to its mass.

False. The heat of fusion remains constant for a given material regardless of the size of the sample.

What is the constant represented by c in the equation relating heat to change in temperature?

 

Specific heat

Which of the following is the correct definition for the specific heat of a particular substance?

 

The amount of heat released when one gram of a substance is cooled by 1°C.

Energy is the ability to do _____.

work

Energy, work done, and _____ share the same units.

heat