Daily Practice · GCSE Science
September 2007 - GCSE Science 5-a-day
Every GCSE Science sheet published in September 2007, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in September 2007
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st September 2007Define homeostasis.
- 2nd September 2007Give one example of variation that is caused purely by the environment rather than by genes.
- 3rd September 2007An atom has atomic number 9 and mass number 19. Calculate the number of neutrons.
- 4th September 2007Give two observations when lithium is added to water.
- 5th September 2007State the value of the Avogadro constant and what it counts.
- 6th September 2007Give one everyday example of an endothermic process.
- 7th September 2007In the Haber process, state the effect of removing some ammonia from the equilibrium mixture as it forms on the position of equilibrium.
- 8th September 2007Write the ionic equation for the precipitation reaction between barium ions and sulfate ions.
- 9th September 2007Write the equation linking power, energy and time, and rearrange it for time.
- 10th September 2007A current of 2.0 A flows through a resistor for 30 s. Calculate the charge that flows. Use Q = I x t.
- 11th September 2007A gas is heated in a sealed rigid container. Explain what happens to the pressure.
- 12th September 2007A runner completes a 400 m race in 52 s. Calculate her average speed, giving your answer to 3 significant figures.
- 13th September 2007Name the type of electromagnetic wave used by a television remote control.
- 14th September 2007Explain why a satellite moving in a stable circular orbit has a changing velocity even though its speed stays constant.
- 15th September 2007Define an undifferentiated cell.
- 16th September 2007Which tissue transports water and mineral ions from the roots?
- 17th September 2007Give three uses of the glucose produced in photosynthesis.
- 18th September 2007Explain, using the idea of natural selection, why a population of insects can become resistant to a pesticide over time.
- 19th September 2007A peat bog covered an area of 850 hectares in 2015. By 2025, drainage for farmland had reduced the peat bog to 680 hectares. Calculate the percentage decrease in the area of the peat bog.
- 20th September 2007Explain why steel (an alloy of iron and carbon) is generally harder than pure iron.
- 21st September 2007Why do polymers have higher melting points than small molecules such as methane?
- 22nd September 2007Complete: acid + metal carbonate gives ...
- 23rd September 2007State the four factors that can increase the rate of a chemical reaction.
- 24th September 2007Name the carboxylic acid produced when ethanol is oxidised.
- 25th September 2007Explain, in terms of gas molecules, why methane and water vapour, as well as carbon dioxide, are described as greenhouse gases.
- 26th September 2007By what factor does kinetic energy increase if speed is doubled?
- 27th September 2007A block has a volume of 50 cm^3 and a mass of 135 g. Calculate its density.
- 28th September 2007Define the term 'half-life' of a radioactive isotope.
- 29th September 2007Define the term 'wavelength' of a wave.
- 30th September 2007State the difference between an alternator and a dynamo.