Particle model of matter Flashcards
Arrangement of particles in a solid
Particles are very close together
Particles are arranged in regular patterns
Particles vibrate but do not move from place to place
Arrangements of particles in a liquid
Particles are close together
Particles not arranged in regular pattern
Particles can move around each other
Arrangement of particles in a gas
Particles are very far apart
Particles not arranged in any pattern
Particles are moving very rapidly
what is the unit for pressure
pascal (pa)
What is density
The mass for a given volume
What is the equation for density
Density=Mass/Volume
p=m/v
kg/m^3=kg/M^3
Why do solids usually have a very high density
The particles are packed closet toggeher solids have a lot of mass for their volume
Why do Liquids usually have high density
The particles are close together liquids have a lot of mass for their volume
Why do gasses have a low density
Particles are very far apart so gasses only have a small mass for their volume
What is internal energy
The energy stored in a system by the particles
And the total kinetic energy and potential energy of all the particles that make up a system
What is condensation
Gas to liquid
What is sublimation
Solid to gas without going through liquid
What is evaporation
When a liquid turns into a gas but only the surface of a liquid
Only the particles on the surface have enough energy to turn into a gas
What is latent heat
The energy needed for a substance to change state
During a change of state what is being changed
The increase of temperature but not the change in temperature
