Table of Contents
- 1 What is the physical meaning of specific heat?
- 2 What is the physical significance of negative specific heat?
- 3 Why is specific heat important in chemistry?
- 4 What is meant by specific latent heat?
- 5 Can specific heat of a gas be negative?
- 6 Is specific heat capacity constant?
- 7 What kind of physical property is specific heat?
- 8 What does specific latent heat mean?
What is the physical meaning of specific heat?
specific heat, the quantity of heat required to raise the temperature of one gram of a substance by one Celsius degree.
What is the physical significance of negative specific heat?
Heat capacity is the measure of energy required to increase temperature of a material. Negative heat capacity would mean that increasing energy of a system leads to decrease in temperature.
Why is specific heat a physical property?
Specific heat is another physical property of matter. All matter has a temperature associated with it. The temperature of matter is a direct measure of the motion of the molecules: The greater the motion the higher the temperature: Heat loss or gain by matter is equivalent energy loss or gain.
Why is specific heat important in chemistry?
Heat capacity or specific heat is the amount of heat per unit mass that is required to raise the temperature by 1°C. Specific heat is helpful in determining the processing temperatures and amount of heat necessary for processing and can be helpful in differentiating between two polymeric composites.
What is meant by specific latent heat?
Specific latent heat is the amount of energy required to change the state of 1 kilogram (kg) of a material without changing its temperature. latent heat of fusion – the amount of energy needed to melt orfreeze the material at its melting point.
Why is high specific heat important to life?
Explanation: The high specific heat of water means that it requires a large amount of heat to raise the temperature of water. This helps the temperature of the environment from becoming too hot or too cold. The fact that water is such a good solvent for polar molecules allows the chemistry of life to occur.
Can specific heat of a gas be negative?
Molar specific heat capacity of a gas can be negative, positive or zero.
Is specific heat capacity constant?
The heat capacity is an extensive property, scaling with the size of the system. The heat capacity of most systems is not constant (though it can often be treated as such). It depends on the temperature, pressure, and volume of the system under consideration.
What is the significance of specific heat in the selection of physical properties of metals?
In manufacturing, all three properties are important factors in choosing the right alloy. Heat capacity, also known as specific heat, is the amount of energy needed to change the temperature of a material, and is a key component of predicting casting solidification.
What kind of physical property is specific heat?
Specific heat capacity is the amount of heat energy required to raise the temperature of a substance per unit of mass. The specific heat capacity of a material is a physical property. It is also an example of an extensive property since its value is proportional to the size of the system being examined.