National Curriculum Requirements

Double Science Key stage 4

Sc2 Life processes and living things

Green plants as organisms

3a)        the reactants in, and products of, photosynthesis (click here)

3b)        that the rate of photosynthesis may be limited by light intensity, carbon dioxide concentration or temperature (click here)

3f)         how plants take up water and transpire (click here)

Sc3 Materials and their properties

Patterns of behaviour

3g)       the properties and reactions of the alkali metals (click here)

3k)       about different types of chemical reaction, including neutralisation, oxidation, reduction and thermal decomposition, and examples of how these are used to make new materials (click here)

3n)       about the great variation in the rates at which different reactions take place (click here)

3o)       how the rates of reaction can be altered by varying temperature or concentration, or by changing the surface area of a solid reactant, or by adding a catalyst (click here)

3q)       about the effect of temperature on the rates of enzyme-catalysed reactions and their dependence on pH (click here)

3t)        that changes of temperature often accompany reactions (click here)

3u)       that reactions can be exothermic or endothermic (click here)

Sc4 Physical processes

Electricity

1a)       that resistors are heated when charge flows through them (click here)

1b)       the qualitative effect of changing resistance on the current in a circuit (click here)

1c)       the quantitative relationship between resistance, voltage and current (click here)

1d)       how current varies with voltage in range of devices [for example, resistors, filament bulbs, diodes, light dependent resistors (LDRs) and thermistors] (click here)

1f)        the quantitative relationship between power, voltage and current (click here)

1g)       the difference between the direct current (dc) and alternating current (ac) (click here)

1j)         how measurements of energy transferred are used to calculate the costs of using common domestic appliances (click here)

1o)       the quantitative relationship between steady current, charge and time (click here)

Forces and motion

2a)       how distance, time and speed can be determined and represented graphically (click here)

2d)       that acceleration is change in velocity per unit of time (click here)

2f)        the quantitative relationship between force, mass and acceleration (click here)

2h)       how the forces acting on falling objects change with velocity (click here)

Waves

3b)       The meaning of frequency, wavelength and amplitude of a wave (click here)

3l)         About sound and ultrasound waves, and some medical and other uses of ultrasound (click here)

3m)       That longitudinal and transverse earthquake waves are transmitted through the Earth, and how their travel times and paths provide evidence for the Earth’s layered structure (click here)

Energy resources and energy transfer

5a)       how insulation is used to reduce transfer of energy from hotter to colder objects (click here)

5c)       the quantitative relationship between force and work (click here)

5e)       to calculate kinetic and potential energy

5f)        that force is exerted on a current-carrying wire in a magnetic field and the application of this effect in simple electric motors (click here)

5g)       that a voltage is induced when a conductor cuts magnetic field lines and when the magnetic field through a coil changes (click here)

5h)       how simple ac current-generators and transformers work (click here)

Radioactivity

6d)       the meaning of the term ‘half life’ (click here)