4.3.2 Internal energy and energy transfers

what is the internal energy of a substance

the energy stored by its particles, the sum of total kinetic and potential energys

three factors that determine the temp change in a system

mass of substance being heater, specific heat capacity, energy inputted to the system

state the equation sued to calc temp change when a substance is heated and units

Energy(J), mass (KG) SHC(J/KG/*C), temperature (*C)*

specific heat capacity is

the amount of energy needed to increase the temperature of 1kg of a substance by 1\*C

describe how internal energy and temperate changes when a change of state

internal energy will be increased or decreased, temp of the substance remains constant

specific latent heat is

the amount of energy needed to change the state of 1kkg of a substance with no change in temp

equation required to change state equation

energy required to change state= mass x Specific latent heat (j/kg)

fusion is

solid into a liquid

vaporisation is

liquid to a gas