Particle Model Of Matter- Changes Of State And Particle Model Flashcards
What is the definition of density?
The mass per unit volume of a material
What is the equation for density
P=M/V
(P)=density(kg/m squared)
(M)=mass(kg)
(V)=volume(m squared)
State the different states of matter(least to most of density of atoms)
Least dense-Gas
Liquid
Most dense-Solid
Describe the particle arrangement of a solid?
Tightly packed in regular arrangements
Particles can only vibrate on the spot
Describe the particle arrangement of a liquid?
Close together with irregular arrangement
They can flow over each other
Describe the particle arrangement of a gas?
Separated
Particles are free to move
What is always conserved when a substance undergoes a change of state?
Mass
How does a change of state differ from a chemical state?
In a change of state, the material can return to having its previous properties if the change is reversed
What is sublimation?
When a solid turns into a gas without passing through a liquid state
What is evaporation?
When a liquid changes into a gas state
What is condensation?
When a gas changes into a liquid state
When water boils in an open pan why does the mass of the pan of water appear to decrease?
Some of the water will evaporate and turn into water vapour meaning mass of the pan will decrease
The mass of the whole system however stays constant?
Explain the process involved when a bathroom mirror mists up?
Hot water evaporates to form water vapour
This water vapour lands on the cooler mirror
The vapour condenses and returns to liquid state on the mirror surface
