P6 Molecules And Matter
No description yet. This curated deck is ready for daily study.
Card preview (13)
What is density defined as
Mass per unit volume
What is density equal to
Mass m (kg) over volume V (Kg/m^3)
What is sublimation
Solid to gas
What is gas becoming solid called
Deposition
What is the conservation of mass
When a substance changes state the number of particles in the substance stays unchanged
What effects melting and boiling points of a substance
They are affected by impurities
What is latent heat
The energy needed for a substance to change state(The energy needed by the particles to break free from each other)
What is internal energy
The sum of energy that is caused by the kinetic and potential energies of all the particles that make up the substance
What happens when you heat a substance
The internal energy increases as more energy enters the substance causing particles to vibrate or move more
What is specific heat capacity
The energy needed to raise the temperature of 1 kg of a substance by 1 degrees
What is specific latent heat
The energy needed to change 1 kg of a substance
What’s the difference between specific latent heat of fusion and specific latent heat of vaporisation
Fusion is the energy needed for 1 kg of the substance to change from solid to liquid state Vaporisation is the energy needed for 1 kg of the substance to change from liquid to vapour at its boiling point
What happens when you heat any gas sealed container
The pressure increases as heat energy is transferred to kinetic energy making the particles move more and collide more with the surface inside the container and could cause it to explode