Which refers to the amount of heat required to change the temperature of 1 gram of a substance by 1°C and is related to the chemical composition of the substance?

A. Thermal energy
B. Specific heat
C. Activation heat
D. Boiling point



Answer :

Final answer:

Specific heat is the amount of heat needed to change the temperature of a substance by 1°C. It is a property specific to the substance and has a direct relationship with mass and total heat capacity.


Explanation:

Specific heat refers to the amount of heat required to change the temperature of 1 gram of a substance by 1°C. It is a property of the substance and is expressed in units like J/(kg⋅K) or J/(kg⋅C).

For example, water has a specific heat of 1.0 cal/(g°C), meaning 1 calorie of energy is needed to raise the temperature of 1 gram of water by 1°C.

The formula for total heat capacity (C) is the product of specific heat capacity (c) and the mass of the substance (m), showing the relationship between heat, mass, and temperature change.


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