Key term
AQA GCSE Physics 8463
Atomic Structure
Topic overviewThe structure of an atomMass number, atomic number and isotopesFrom the plum pudding model to the nuclear modelChadwick, the neutron, and comparing the modelsRadioactive decay and nuclear radiationNuclear equationsHalf-lives and the random nature of radioactive decayRadioactive contaminationBackground radiationUses of nuclear radiation, and how half-life affects hazardNuclear fission and nuclear fusion
Electricity
Topic overviewCircuit symbols, electrical charge and currentCurrent, resistance and potential differenceOhmic conductors, filament lamps, diodes and thermistorsLight-dependent resistors, and investigating resistanceCurrent and potential difference in series and parallelConstructing circuits, and calculating in series circuitsDirect and alternating potential difference, and mains electricityPower and efficiencyAppliances, and the energy transferred by electrical workPower, and the power ratings of domestic appliancesThe National GridStatic chargeElectric fields
Energy
Forces
Topic overviewScalars, vectors, forces and the resultant forceGravityWork done and energy transferStretching, compressing, and the spring constantLinear and non-linear extension, and work done on a springMoments, levers and gearsPressure at a surface, and the equation p = F over APressure in a column of liquid, upthrust and floatingAtmospheric pressureResolving forces and free body diagramsDistance, displacement and speedThe speed of sound, and the distance-speed-time equationVelocity and the distance-time relationshipAcceleration, deceleration and velocity-time graphsArea under a velocity-time graph, and the uniform acceleration equationNewton's First LawNewton's Second and Third LawsStopping distance and reaction timeFactors affecting braking distanceBraking force, deceleration and the dangers of stopping quicklyMomentum and its conservationChanges in momentum
Magnetism and Electromagnetism
Topic overviewPoles of a magnetMagnetic fields around a magnetThe compass, and plotting a magnetic fieldElectromagnetismFleming's left-hand rule, motors and loudspeakersInduced potentialThe generator effect, alternators, dynamos and microphonesThe structure of a transformer and the turns ratioTransformer power, and using the transformer equations
Particle Model of Matter
Space Physics
Waves
Topic overviewTransverse and longitudinal waves, and the wave equationWave properties, and refraction at a boundaryReflection of wavesSound wavesUltrasound, echo sounding and seismic wavesTypes and uses of electromagnetic wavesRadio waves, and the hazards of ultraviolet, X-rays and gamma raysLensesVisible lightEmission and absorption of infrared radiation, and black bodies
Atomic Structure
Nuclear equations
- 3 things to know
- Paper 1
Overview
What a nuclear equation represents, the two totals that balance, the numbers given to alpha and beta particles, and how each kind of emission changes mass number and atomic number.
What you need to know
Answer each one before you reveal it.
Your recallNot started
Key term
In a nuclear equation, which particle is given a mass number of 4 and an atomic number of 2?
Key term
What mass number and atomic number are given to a beta particle in a nuclear equation?
Questions from this subtopic
Each one with the model answer underneath.
- 1
What is a nuclear equation used to represent?
Model answer
Radioactive decay.
- 2
Which two totals must be the same on both sides of a nuclear equation?
Model answer
The total mass number and the total atomic number.
- 3
In a nuclear equation, which particle is given a mass number of 4 and an atomic number of 2?
Model answer
An alpha particle, which is the same as a helium nucleus.
- 4
What mass number and atomic number are given to a beta particle in a nuclear equation?
Model answer
A mass number of 0 and an atomic number of −1.
- 5
Explain why a beta particle is given an atomic number of −1.
Model answer
It is an electron carrying one unit of negative charge, so the charges balance when the nucleus it leaves gains one extra proton.
- 6
In what two ways can emitting radiation change a nucleus?
Model answer
It may change the mass of the nucleus, its charge, or both.
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