aqa a level physics paper 2
Study online at https://quizlet.com/_es7yi7
1. what is meant by specific heat capacity: the energy needed to raise the
temperature of 1kg of material by 1C.
2. define avogadro's constant: the number of atoms in 12g of carbon 12 (OR the
no. of particles/atoms in one mole of a substance)
3. define the specific latent heat of vaporisation of water: the energy required to
change the state of a unit mass of water to gas (1) without a change in temperature
(1)
4. features of an ideal gas (3): - collisions are elastic
- molecules have negligible volume
- gas obeys ideal gas law (Boyles law)
5. assumptions made in the molecular kinetic theory of an ideal gas: - all
molecules are identical
- molecules in random motion
- newtonian mechanics apply
- vol of gas molecules negligible (compared to vol of gas)
- collisions are elastic
6. state and explain what happens to the speed of molecules in a gas when
the temperature increases: the average/mean speed of molecules increases (1)
as mean ke proportional to absolute temp
7. state what is meant by an elastic collision: a collision in which ke is conserved
8. two different gases at the same temp have molecules with different mean
square speeds. explain how this is possible: masses are different (1) but be-
cause ke same, mean square speeds must be different
9. why does the total ke of an ideal gas equal the total internal energy of an
ideal gas: molecules have no potential energy (1) no elastic collisions occur
10. Explain what is meant by the binding energy of a nucleus: the energy
required to split up the nucleus (1) into individual nucleons (1)
11. 3 sources of background radiation: Rocks (1)
the sun (1)
cosmic rays (1)
12. What is meant by the decay constant?: probability of decay per unit time
13. Describe the changes made inside a nuclear reactor to reduce its power
output and explain the process involved: insert control rods (further) into the
nuclear core / reactor (1)
which will absorb (more) neutrons (reducing further fission reactions) (1)
14. State the main source of the highly radioactive waste from a nuclear
reactor.: fission fragments / daughter products OR spent / used fuel / uranium rods
(1)
1/1
Study online at https://quizlet.com/_es7yi7
1. what is meant by specific heat capacity: the energy needed to raise the
temperature of 1kg of material by 1C.
2. define avogadro's constant: the number of atoms in 12g of carbon 12 (OR the
no. of particles/atoms in one mole of a substance)
3. define the specific latent heat of vaporisation of water: the energy required to
change the state of a unit mass of water to gas (1) without a change in temperature
(1)
4. features of an ideal gas (3): - collisions are elastic
- molecules have negligible volume
- gas obeys ideal gas law (Boyles law)
5. assumptions made in the molecular kinetic theory of an ideal gas: - all
molecules are identical
- molecules in random motion
- newtonian mechanics apply
- vol of gas molecules negligible (compared to vol of gas)
- collisions are elastic
6. state and explain what happens to the speed of molecules in a gas when
the temperature increases: the average/mean speed of molecules increases (1)
as mean ke proportional to absolute temp
7. state what is meant by an elastic collision: a collision in which ke is conserved
8. two different gases at the same temp have molecules with different mean
square speeds. explain how this is possible: masses are different (1) but be-
cause ke same, mean square speeds must be different
9. why does the total ke of an ideal gas equal the total internal energy of an
ideal gas: molecules have no potential energy (1) no elastic collisions occur
10. Explain what is meant by the binding energy of a nucleus: the energy
required to split up the nucleus (1) into individual nucleons (1)
11. 3 sources of background radiation: Rocks (1)
the sun (1)
cosmic rays (1)
12. What is meant by the decay constant?: probability of decay per unit time
13. Describe the changes made inside a nuclear reactor to reduce its power
output and explain the process involved: insert control rods (further) into the
nuclear core / reactor (1)
which will absorb (more) neutrons (reducing further fission reactions) (1)
14. State the main source of the highly radioactive waste from a nuclear
reactor.: fission fragments / daughter products OR spent / used fuel / uranium rods
(1)
1/1
