Particle Model of Matter Flashcards
Describe a solid's ∙ particle arrangement ∙ forces between particles ∙ distance between particles ∙ particle motion
> regular, fixed.
strong.
very small.
vibration only.
Describe a liquid's ∙ particle arrangement ∙ forces between particles ∙ distance between particles ∙ particle motion
> irregular.
weak.
small.
slow.
Describe a gas' ∙ particle arrangement ∙ forces between particles ∙ distance between particles ∙ particle motion
> irregular.
very weak.
large.
fast.
What happens to the density as solid turns into a liquid to then a gas?
The density decreases.
The higher the temperature of a gas…
…the higher the average energy in the kinetic energy stores of the gas particles.
What happens to gas particles when temperature increases?
They get faster and collide with the container more often therefore pressure increases.
What is density?
The mass per unit volume.
What is the formulae for density?
𝜌 = m/v density = mass / volume
[kilogram/metre³ (kg/m³) = kilogram (kg) / mass³ (m³)]
What is internal energy?
The total energy stored by the particles that make up a system.
What is the change of state process called from a solid to liquid?
Melting.
What is the change of state process called from a liquid to gas?
Boiling or evaporating.
What is the change of state process called from a gas to liquid?
Condensing.
What is the change of state process called from a liquid to solid?
Freezing.
What is the change of state process called from a solid to gas?
Sublimating.
What are the three things that happen in melting and boiling?
> bonds between particles are broken.
internal energy increases
↳ energy is transferred to particles’ potential energy stores.
temperature stays the same.
