Particle Model Flashcards
What is the equation for density?
Density= mass/ volume
What is specific latent heat?
The energy needed to cause 1kg of a substance to change state without changing temperature.
The latent heat of fusion is __________________.
The latent heat of vaporisation is __________________________.
for a substance to change from solid to liquid.
for a substance to change from liquid to gas.
What does it mean when the graph has a stationary part?
_______
____/
When energy is used to change state.
What is sublimation?
When substances change from a solid to a gas without having a liquid phase in the middle.
What is desublimation?
When substances change from a gas to a solid without a liquid phase in the middle.
What is the equation for energy for a change of state?
Energy= mass x specific latent heat
Temperature is _______________________.
The average kinetic energy of the particles.
When particles of a gas collide with the walls of their container, they ___________ on the wall.
This is pressure.
exert a force
What happened if you increase the temperature of a container of gas?
The kinetic energy increases. So, the speed of the particles increases.
This increases the frequency and force the particles hit the force.
Therefore, the pressure increases.
Describe the movement of particles of helium gas inside a balloon.
Range of speeds.
Moving in different directions.
What is internal energy?
Total amount of kinetic energy + potential energy of all particles in a system.
