Daily Practice · GCSE Science
September 2008 - GCSE Science 5-a-day
Every GCSE Science sheet published in September 2008, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in September 2008
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st September 2008State what is meant by the activation energy of a reaction.
- 2nd September 2008State two products, other than water, that can be formed during the incomplete combustion of a hydrocarbon.
- 3rd September 2008Explain why the baseline is drawn in pencil rather than ink.
- 4th September 2008Give one reason for taking the gradient from the line of best fit rather than from two data points.
- 5th September 2008State the equation linking potential difference, current and resistance.
- 6th September 2008Define half-life.
- 7th September 2008Explain why a larger vehicle mass increases braking distance.
- 8th September 2008State the type of force that always acts between an induced magnet and the magnet that induced it.
- 9th September 2008Name the model of the origin of the universe that is supported by red-shift observations.
- 10th September 2008Define osmosis.
- 11th September 2008Explain why a small number of healthy volunteers are given a very low dose of a new drug in the first stage of a clinical trial.
- 12th September 2008Define oxygen debt.
- 13th September 2008Explain one benefit of the Human Genome Project.
- 14th September 2008A gas syringe collects 48 cubic centimetres of gas in 40 seconds. Calculate the mean rate.
- 15th September 2008Why do isotopes of an element react in the same way?
- 16th September 2008Calculate the Mr of calcium carbonate, CaCO3. (Ca = 40, C = 12, O = 16)
- 17th September 2008Explain why solid sodium chloride does not conduct electricity, but molten sodium chloride does.
- 18th September 2008In the gas-volume required practical measuring how concentration affects rate, state one variable that should be controlled.
- 19th September 2008State the reagent added, and the result, that shows a white solid contains sulfate ions.
- 20th September 2008State the two products of the complete combustion of a hydrocarbon fuel.
- 21st September 2008State one way to increase the efficiency of a motor.
- 22nd September 2008Why is the density of a gas much lower than that of the same substance as a liquid?
- 23rd September 2008A cyclist rides 300 m north then 300 m back south to the start. State the total distance travelled and total displacement.
- 24th September 2008A wave travels from air into glass and slows down. State what happens to its direction, and explain why in terms of wavelength.
- 25th September 2008State what a nebula is, and explain its role in the life cycle of a star.
- 26th September 2008Name two structures found in a plant cell but not in an animal cell.
- 27th September 2008Why is the wall of the left ventricle thicker than that of the right ventricle?
- 28th September 2008A lamp is placed 10 cm from pondweed. Calculate the relative light intensity using relative light intensity = 1 / distance^2.
- 29th September 2008Name the hormone released by the adrenal glands that prepares the body for fight or flight.
- 30th September 2008State one abiotic factor that can affect the population of fish living in a pond.