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WorksheetsP3 - Changes of state and the particle model
Total questions: 25
Worksheet time: 15mins
What is the equation for density ?
Density = volume / mass
Density = mass / volume
Volume = density x mass
Volume = density / mass
What are the measurements for the density equation ?
density, ρ, in kilograms per metre cubed, m/m3 grams, m, in kilograms, km
volume, A, in metres cubed, m4
volume, ρ, in kilograms per metre cubed, kg/m3 volume, m, in kilograms, kg
volume, V, in metres cubed, m3
density, ρ, in kilograms per metre cubed, kg/m3 mass, m, in kilograms, kg
volume, V, in metres cubed, m3
density, f, in kilograms per cm cubed, kg/m3
mass, m, in kilograms, kg
volume, V, in metres cubed, m2
What happens when a substance changes state ?
Mass is conserved
Mass decreases
Mass increases
Mass is dissolved
Which is a liquid ?
None of them
Which is a gas ?
None of the above
Which is a solid ?
None of them
What is a change of state ?
A chemical change
A physical change
A table change
A science change
When a liquid changes state and becomes a solid it is known as...
condensation
melting
vaporisation
freezing or solidification
A state change from a gas to a liquid is...
condensation
evaporation
expansion
movement
Why do liquids have the ability to evaporate?
Because there are no attractive forces between particles
Because the particles are relatively close together
Because the particles can slide past one another
Because there are large distances between particles
Because some particles have enough energy to escape into the gas state
What is the equation for change in thermal energy ?
change in thermal energy = mass x specific heat capacity / temperature change
change in thermal energy = mass × specific heat capacity × temperature change
specific heat capacity = mass / change in thermal energy x temperature change
specific heat capacity = mass / temperature change / change in thermal energy
What are the measurements for the change in thermal energy equation ?
change in internal energy, ∆E, in kilojoules, J
mass, m, in kilograms, kg
specific thermal capacity, c, in joules per kilogram per degree Celsius, J/kg °C
temperature change, ∆θ, in degrees Celsius, °C.
change in thermal energy, ∆E, in joules, J mass, m, in kilograms, J/kg
specific heat capacity, c, in joules per kilogram per 10 degrees Celsius, kg °C
temperature change, ∆θ, in degrees Farenheit, °C
change in thermal energy, ∆T, in joules, KJ
mass, m, in grams, g
specific heat capacity, shc, in joules per gram per degree Celsius, J/kg °F
temperature change, ∆θ, in degrees Celsius, °F
change in thermal energy, ∆E, in joules, J
mass, m, in kilograms, kg
specific heat capacity, c, in joules per kilogram per degree Celsius, J/kg °C
temperature change, ∆θ, in degrees Celsius, °C
What is the energy needed for a change of state ?
chemical
Kinetic
Latent heat
Temperature
When a change of state occurs what happens ?
Temperature and internal energy changes
Temperature changes but internal energy stays the same
Temperature and internal energy stays the same
Temperature stays the same and internal energy changes
What is the equation for the energy for a change of state ?
Energy for a change of state = mass x specific latent heat
Energy for a change of state = specific latent heat / mass
Mass = temperature / energy for a change of state
Mass = temperature x energy for a change of state
What are the measurements for the energy for a change of state equation ?
energy, E, in joules, J
mass, m, in grams, g
specific latent heat, slh, in kilo joules per kilogram, KJ/kg
energy, E, in joules, J
mass, m, in kilograms, kg
specific latent heat, L, in joules per kilogram, J/kg
energy, E, in joules, cm
mass, m, in kilograms, J/kg
specific latent heat, L, in joules per kilogram, J
energy, ey , in joules, J
mass, m, in kilograms, kg
specific latent heat, L, in joules per kilogram, J/kg
What is the specific latent heat of fusion ?
Change of state from solid to liquid
Change of state from liquid to vapour
30C
60C
What is the specific latent heat of vaporisation ?
Change of state from solid to liquid
Change of state from liquid to vapour
30C
60C
What kind of motion are gas molecules in ?
However it feels like being
Occasional random motion
Constant specific motion
Constant random motion
What happens when you change the temperature of a gas ?
Keeps the same pressure exerted by the gas
Changes the pressure exerted by the gas
The gas moves
The gas stays still
Can a gas be compressed and expanded by pressure changes ?
Yes both can
No neither can
The gas can only be compressed
The gas can only be expanded
What is the equation for a fixed mass of gas held at a constant temperature ?
Pressure = volume x temperature
Constant = volume / pressure
Constant = pressure x volume
Pressure = temperature / volume
What are the measurements for a fixed mass of gas held at a constant temperature ?
pressure, h, in pascals, Pa
volume, A, in metres cubed, m3
pressure, p, in pascals, Pa
volume, V, in metres squared, m2
pressure, p, in pascals, Pa
volume, V, in metres cubed, m3
pressure, p, in pascals, Pe
volume, V, in metres cubed, m3
When doing work on a gas what happens ?
Internal energy increases and the temperature of the gas
Internal energy decreases and the temperature of the gas
Nothing happens
The gas gets tired
