Daily Practice · GCSE Science
July 2000 - GCSE Science 5-a-day
Every GCSE Science sheet published in July 2000, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in July 2000
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st July 2000In the Haber process, state the effect of removing some ammonia from the equilibrium mixture as it forms on the position of equilibrium.
- 2nd July 2000A solution gives a cream precipitate when acidified with dilute nitric acid and then treated with silver nitrate solution. Name the halide ion present.
- 3rd July 2000A device transfers 4500 J in 90 s. Calculate its power.
- 4th July 2000In a series circuit, the current through one lamp is 0.30 A. State the current through a second lamp in the same circuit.
- 5th July 2000Why does a bicycle pump get warm when used?
- 6th July 2000A runner completes a 400 m race in 52 s. Calculate her average speed, giving your answer to 3 significant figures.
- 7th July 2000Name the type of electromagnetic wave used by a television remote control.
- 8th July 2000Explain why a satellite moving in a stable circular orbit has a changing velocity even though its speed stays constant.
- 9th July 2000What happens to the DNA before mitosis begins?
- 10th July 2000State two conditions that increase the rate of transpiration.
- 11th July 2000A lamp is moved from 15 cm to 30 cm away. What happens to the light intensity?
- 12th July 2000Explain, using the idea of natural selection, why a population of insects can become resistant to a pesticide over time.
- 13th July 2000Name the biological process that removes carbon dioxide from the atmosphere and converts it into carbon compounds in a plant.
- 14th July 2000State one environmental benefit of recycling aluminium cans rather than making new aluminium from ore.
- 15th July 2000Explain why graphite conducts electricity but diamond does not.
- 16th July 2000State what is observed when magnesium ribbon is added to copper sulfate solution.
- 17th July 2000State the equation for the mean rate of a reaction in terms of the quantity of reactant used.
- 18th July 2000Name the carboxylic acid produced when ethanol is oxidised.
- 19th July 2000Describe, in terms of wavelength, the difference between the radiation the Earth receives from the Sun and the radiation it re-emits from its surface.
- 20th July 2000Calculate the kinetic energy of a 0.5 kg ball moving at 6 m/s.
- 21st July 2000State what happens to the internal energy of a substance as it is heated, in terms of the kinetic and potential energy of its particles.
- 22nd July 2000Explain why americium-241, an alpha emitter, is suitable for use in a smoke detector.
- 23rd July 2000Define the term 'wavelength' of a wave.
- 24th July 2000State the difference between an alternator and a dynamo.
- 25th July 2000A microscope has a x10 eyepiece lens and a x20 objective lens. Calculate the total magnification.
- 26th July 2000Where is bile made and where is it stored?
- 27th July 2000Why does a vaccinated person not usually become ill when they meet the pathogen?
- 28th July 2000State the type of effector that produces a physical response by contracting.
- 29th July 2000Give one example of a biotic factor that could affect a population of rabbits.
- 30th July 2000Explain why potable water is not the same as pure water.
- 31st July 2000Explain why sodium chloride conducts electricity when molten but not when solid.