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Year 10 Triple Homework - Wednesday 19th January
By David Spratt
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Last updated about 4 years ago
15 questions
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Question 1
1.
Define 'conservation of mass'
Total mass is the higher before reaction
Total mass is the same before and after a reaction
Total mass is the lower after a reaction
Question 2
2.
Why does temperature not change during a state change?
Energy used to make particles move more increasing the internal energy not temperature
Energy used to make/break bonds increasing the internal energy and temperature
Energy used to make/break bonds increasing the internal energy not temperature
Question 3
3.
Define "internal energy"
Total kinetic and potential energy of particles in a system
Average kinetic energy of particles in a system
Average potential and kinetic energy of particles in a system
Total kinetic energy of particles in a system
Question 4
4.
How does heating affect the internal energy of a system?
it increases it
it decreases it
no effect
Question 5
5.
State the equation for change in thermal energy
Change in energy (J) = mass (kg) x specific heat capacity (J/Kg°C) x change in temperature (°C)
∆ E = m c ∆ θ Change in energy (J) = mass (kg) x specific heat capacity (J/Kg°C) x change in temperature (°C)
∆ E = m c ∆ θ Change in energy (J) = mass (kg) x specific heat capacity (J/Kg°C) x change in temperature (°C)
Question 6
6.
State the equation for mass
mass (kg) = Change in energy (J) / (specific heat capacity (J/Kg°C) x change in temperature (°C) )
mass (kg) = specific heat capacity (J/Kg°C) x change in temperature (°C) / Change in energy (J)
mass (kg) = Change in energy (J) x specific heat capacity (J/Kg°C) / change in temperature (°C)
Question 7
7.
State the units for specific heat capacity
Joules per degree Celsius
Joules per kilogram
Joules per kilogram per degree Celsius
Question 8
8.
Define "specific heat capacity"
Amount of energy required to raise the temperature of one kilogram of the substance by one degree Celsius.
The amount of energy required to freeze one kilogram of the substance with no change in temperature
The amount of energy required to boil one kilogram of the substance with no change in temperature
The energy needed for a substance to change state
Question 9
9.
Define "latent heat"
Amount of energy required to raise the temperature of one kilogram of the substance by one degree Celsius.
The amount of energy required to freeze one kilogram of the substance with no change in temperature
The amount of energy required to boil one kilogram of the substance with no change in temperature
The energy needed for a substance to change state
Question 10
10.
Define "specific latent heat of vaporisation"
Amount of energy required to raise the temperature of one kilogram of the substance by one degree Celsius.
The amount of energy required to freeze one kilogram of the substance with no change in temperature
The amount of energy required to boil one kilogram of the substance with no change in temperature
The energy needed for a substance to change state
Question 11
11.
Define "specific latent heat of fusion"
Amount of energy required to raise the temperature of one kilogram of the substance by one degree Celsius.
The amount of energy required to freeze one kilogram of the substance with no change in temperature
The amount of energy required to boil one kilogram of the substance with no change in temperature
The energy needed for a substance to change state
Question 12
12.
Equation for specific latent heat.
E = m x L
E = m + L
E = m / L
Question 13
13.
What does a flat section on a heating and cooling graph represent?
a change of state
a temperature increase
a temperatue decrease
an energy change
Question 14
14.
Describe the motion of particles in a gas.
particles vibrate
particles slide over each other
particles move freely in all directions
Question 15
15.
Describe the arrangement of particles in a liquid - choose 2
regular arrangement
irregular arrangement
particles are spread out
particles are touching