Daily Practice · GCSE Science
December 2005 - GCSE Science 5-a-day
Every GCSE Science sheet published in December 2005, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in December 2005
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st December 2005Explain, using the idea of natural selection, why a population of insects can become resistant to a pesticide over time.
- 2nd December 2005State one way in which high biodiversity benefits an ecosystem.
- 3rd December 2005Explain how painting an iron gate helps prevent it from rusting.
- 4th December 2005Why can an ionic solid not conduct electricity?
- 5th December 2005Name the salt made from zinc oxide and nitric acid.
- 6th December 2005State what is meant by a catalyst.
- 7th December 2005Name the carboxylic acid produced when ethanol is oxidised.
- 8th December 2005Describe, in terms of wavelength, the difference between the radiation the Earth receives from the Sun and the radiation it re-emits from its surface.
- 9th December 2005Define specific heat capacity.
- 10th December 2005State what happens to the internal energy of a substance as it is heated, in terms of the kinetic and potential energy of its particles.
- 11th December 2005State the number of protons and the number of neutrons in an alpha particle.
- 12th December 2005Define the term 'wavelength' of a wave.
- 13th December 2005State the difference between an alternator and a dynamo.
- 14th December 2005A microscope has a x10 eyepiece lens and a x20 objective lens. Calculate the total magnification.
- 15th December 2005Why does a food test for sugars need a water bath?
- 16th December 2005Explain what is meant by a double blind trial.
- 17th December 2005State the type of effector that produces a physical response by contracting.
- 18th December 2005Give one example of a biotic factor that could affect a population of rabbits.
- 19th December 2005Explain why potable water is not the same as pure water.
- 20th December 2005Explain why sodium chloride conducts electricity when molten but not when solid.
- 21st December 2005Give the formula for atom economy.
- 22nd December 2005Explain, in terms of the reaction pathway, why adding a catalyst increases the rate of a reaction without changing the overall energy change of the reaction.
- 23rd December 2005Balance the equation for the complete combustion of methane: CH4 + O2 -> CO2 + H2O
- 24th December 2005State one advantage of running known reference substances alongside an unknown sample on the same chromatogram, rather than only comparing to published Rf values.
- 25th December 2005How is the uncertainty in a set of repeated readings usually estimated?
- 26th December 2005Define electric current.
- 27th December 2005A source has a half-life of 5 days and an initial activity of 1600 Bq. What is its activity after 15 days?
- 28th December 2005State two factors that increase a driver's thinking distance.
- 29th December 2005Name a typical material used to make a permanent magnet, and a typical material used to make an induced (temporary) magnet.
- 30th December 2005State, in one sentence, what the Big Bang model proposes about the early universe.
- 31st December 2005Calculate the surface area to volume ratio of a cube of side 2 cm.