P6 Kinetic Theory Flashcards
What is solid to gas
Sublimation
What is gas to solid
Desublimation or deposition
What is solid to liquid
Melting
What is liquid to solid
Freezing
What is gas to liquid
Condensation
What is liquid to gas
Sublimation/ evaporation
What is the definition of a pure substance
A substance that only contains one type of atom or molecule
What is the equation for that includes Latent heat
Energy required to change state = latent heat x mass
E = L x m
What is the definition of specific heat capacity
The amount of energy required to raise the temperature of 1kg of a substance by 1 degree C
What is the equation that includes specific heat capacity
Energy = mass x specific heat capacity x change in temperature E = m x c x πΊt
Equation for internal energy
Internal energy = kinetic energy + potential energy
What types of energy do gas particles have the most of due to their state
Kinetic energy ( how fast they move ): gas particles move the fastest Potential energy ( position of particles and how much space they have ): gas particles and most spread out
What happens to the energy when a substance changes state
( depending on direction of state change ) the potential energy of a substance changes e.g liquid -> gas = more potential energy
When does a substance gain more kinetic energy
When the temperature increases
What does the horizontal line mean on the cooling curve
It means when a substance is melting or evaporating and changing itβs potential energy
