E-STAR - Student

Heat is thermal energy transferred from a hotter system to a cooler system that are in contact.
Temperature is a measure of the average kinetic energy of the atoms or molecules in the system.
The heat released or absorbed by a body is calculated using the equation: Q = mcΔT
Specific heat capacity is the number of joules of heat energy required to raise the temperature of 1 kg of a substance by 1 k

The three mechanisms of heat transfer are conduction, convection, and radiation.
Conduction occurs within a body or between two bodies in contact.
Convection depends on motion of mass from one region of space to another.
Radiation is heat transfer by electromagnetic radiation, such as sunshine, with no need for matter to be present in the space between bodies.
Heat capacity is the heat required per unit rise in temperature

Calorimetry is an experimental method of determining the specific heat capacity of a body by mixing two or more bodies in a calorimeter and apply the law of heat exchange.
A phase change occurs when a substance changes state.
The critical point is where the liquid and gas phases become indistinguishable.
The triple point is where all three states coexist together.
Latent heat is energy that is supplied to a substance but does not result in a rise in temperature but does result in a change of phase.
Latent heat of fusion

In an internal combustion engine, a mixture of fuel and air is burned in a closed cylinder, inside the engine, contrary to the external combustion engine in which the burning of fuel takes place outside the engine.