This is very useful for people doing Edexcel A2 Chemistry
New Project 4 Tests
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Chemistry checklist
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NAS 410Full description
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Revision Exercises
Unit 4: Check List Further Mechanics – Momentum:
Definition of momentum
Formula for momentum
Units of momentum
What type of quantity is momentum
Law of conservation of momentum in collisions
Definition of impulse
The impulse – momentum equation
Units for impulse
Explanation of why an average force acts during the transfer of impulse
Newton’s 2nd Law and rate of change of momentum
Momentum – kinetic energy equation derivation
Elastic and inelastic collisions
Calculations involving conservation of kinetic energy
Momentum in two dimensions
If a heavy mass collides with a lighter mass at rest then angle between two collisions is less than 90
If a light mass collides with a heavier mass at rest then angle between two collisions is more than 90
If same masses collide with one mass at rest then angle between two collisions is equal to 90
Further Mechanics – Circular Motion:
Understand what is a radian
Conversion of degrees to radians and vice versa
Angular displacement : definition and formula
Angular velocity/speed: definition and formula
Relationship between angular velocity and linear velocity and its derivation
Conversion of rev/sec, rev/min to rad/sec
Remember time period (T) for geostationary orbits is 24 hours
Centripetal acceleration formula (two of them) (Definition or derivation not required)
Centripetal force formula (two of them)
Understand and explain how centripetal force combines Newton’s 1st and 2nd Laws in it
Understand and explain why a body moving in a circle with a constant speed has acceleration
Understand and explain why no work is done on body moving in a circle
Understand that centripetal force is not a new or special kind of force rather it is provided by some known force
Remember different situations where which force provides the centripetal force and explain where does the centripetal force come from: For instance, the centripetal force on the Moon is provided by the gravitational force of the Earth on the Moon.
Understand how the formula for centripetal force varies for different positions in a vertical circular motion
Understand what happens to the component of tension in a conical pendulum
1
Unit 4: Check List Electric and Magnetic Fields – Electric Fields:
Understand that a field is a region where a force acts
Understand that “like” charges repel and “unlike” charges attract
Understand the definition of electric field strength as the force per unit charge
Understand that all fields are vector quantity and electric field strength has a direction
Formula for electric field strength
Units for electric field strength
Using formula for electric field strength to find out the force
Understand what is a uniform electric field and how to produce it
Formula for electric field strength between two parallel plates
Understand the concept of equipotential and equipotential lines
Understand what is the volt
Formula for work done to move a charge between two equipotential lines
Understand what are radial electric fields
Formula for electric field strength E a distance r from a point charge Q is
Formula for Coulomb’s Law
Electric and Magnetic Fields – Capacitance:
Explain what is capacitance
Formula for capacitance
Formula for energy stored by capacitors
Explain why there is a half in the energy equation for capacitors
Understand there are different types of capacitors, e.g. variable capacitors, electrolytic capacitors, etc.
Know and explain the graphs for V, I and Q for charging and discharging capacitors
Know what is the coulombmeter
Understand exponential decay and how a graph is showing exponential decay if the ratios of the values after successful time intervals are constant
Understand capacitor discharge relationship I Q
Understand what is the significance of the time constant
Formula for time constant
Understand that a capacitor is charged or discharged completely after five time constants
Understand how 37% of the charge remains after one time constant
Formula for half-life of capacitor discharge:
Understand the uses of capacitors in applications such as smoothing capacitors and flash guns.
Understand the similarities between capacitors and springs.
2
Unit 4: Check List Electric and Magnetic Fields – Magnetic Fields:
Draw magnetic field lines of current into and out of the page
Draw magnetic field lines around a magnet
Understand that there are no separate North or South pole; they are always found together
Understand the concept of neutral point in magnetic fields
Formula for force on a current carrying conductor in a magnetic field F = BIl
Explain how two current carrying conductors can attract or repel depending on the direction of the current in them
Remember magnetic flux density is B and is measured in Tesla (T)
Total magnetic flux is
Formula for total magnetic flux is
Units for total flux
Understand that the Fleming’s Left Hand Rule is used to find the direction of the force in F = BIl
Draw the path of electron beams under a magnetic field
Explain and understand how d.c. electric motors work
Electric and Magnetic Fields – Electromagnetic Induction:
Understand what is electromagnetic induction
Formula for the emf induced
Explain what is Faraday’s Law
Explain what is Lenz’s Law
Difference between the formula for Lenz’s and Faraday’s Law
Explain how Lenz’s Law is explained by the law of conservation of energy
Explain how the transformer works
Use the Right Hand Grip Rule to find the direction of poles in a solenoid
Use the Right Hand Grip Rule to find the direction current around a wire
Use Fleming’s Right Hand Rule to find out the current in wire in a magnetic field
3
Unit 4: Check List Particle Physics– Probing matter:
Understand what is proton number, neutron number and nucleon number
Explain what are isotopes
Know how to represent an element symbol
Clearly write down the observations and conclusions from the alpha scattering experiment
Understand what is thermionic emission
Understand the wave – particle duality and the equation relating them
Particle Physics– Accelerators:
Explain how a linear accelerator works
Explain how the time is kept constant inside in each drift tubes by increasing their length in a LINAC
Explain how a cyclotron works
Explain how the radius of the particle increases as the particle gains speed with necessary equation
Workout the frequency of the radiation emitted from a cyclotron
Explain how a synchrotron works
Understand the cause for synchrotron radiation
Know how to use different units of energy and mass such as Mev/c2, the unified atomic mass u, etc.
Particle Physics– Detecting particles:
Understand how a bubble chamber or cloud chamber works
Understand how different tracks are produced by particles for example, how spiral tracks are produced
Explain why tracks split apart in spirals or straight lines
Explain why tracks may be perpendicular
Explain the shape of tracks for alpha, beta and gamma particles.
Particle Physics– Particle interactions and classification:
Understand what are particles and antiparticles
Understand and explain what is pair production and pair annihilation
Understand what is rest mass and rest energy
Understand the significance of the electron-volt (eV)
Explain and have a clear definition of what are leptons, baryons, mesons and quarks
Remember the charges for different leptons
Understand baryon numbers, lepton numbers and strangeness
Remember the different charges for the different types of quarks and their strangeness
Understand and remember the beta particle interaction
Understand conservation laws and use them to find out whether a particle interaction is valid or not
Understand what is the standard model for particles
Remember the different exchange particles for the four fundamental forces and their range of action over the forces
