Energy Flashcards
What is specific latent heat?
Different materials require different quantities of heat to change the state of unit mass.
Specific latent heat is the heat required to change the state of a unit mass of a substance without changing its temperature.
What does fusion refer to in thermodynamics?
Fusion is where a unit of mass goes from a solid to a liquid.
Fusion is also known as melting.
What is vaporisation?
Vaporisation is where a unit of mass goes from a liquid to a gas.
Vaporisation includes processes such as boiling and evaporation.
What is specific heat capacity?
The specific heat capacity of a substance is the quantity of energy needed to raise the temperature of 1 kg of a substance by 1 °C.
What happens when heat is added to a material?
When heat is added to a material, the temperature of the material will increase. No change of state.
Do all materials increase temperature by the same amount when equal energy is supplied?
No, not all materials will increase temperature by the same amount if equal quantities of energy are supplied.
What does temperature measure?
Temperature is a measure of the mean kinetic energy of its particles.
How is temperature measured?
Temperature is measured in °C or K.
What does the law of conservation of energy state?
The law of conservation of energy states that energy cannot be created or destroyed, only changed from one form to another.
What does heating involve in terms of energy transfer?
Heating is transferring thermal energy from one body at a high temperature to one at a low temperature.
What is Gay-Lussac’s Law?
Gay-Lussac’s Law relates to the relationship between temperature and pressure of a gas.
How do you convert Celsius to Kelvin?
To change °C to K, add 273.
How do you convert Kelvin to Celsius?
To change K to °C, subtract 273.
What is specific latent heat?
Different materials require different quantities of heat to change state.
Do different states of the same material require the same heat for change?
No, the same material requires different quantities of heat for fusion and vaporisation.
