Daily Practice · GCSE Science
September 2012 - GCSE Science 5-a-day
Every GCSE Science sheet published in September 2012, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in September 2012
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st September 2012State what happens to the carbon-to-carbon double bond of an alkene monomer during addition polymerisation.
- 2nd September 2012Describe, in terms of wavelength, the difference between the radiation the Earth receives from the Sun and the radiation it re-emits from its surface.
- 3rd September 2012State the equation for gravitational potential energy.
- 4th September 2012State what happens to the internal energy of a substance as it is heated, in terms of the kinetic and potential energy of its particles.
- 5th September 2012Radium-226 (atomic number 88) decays by alpha emission. State the atomic number of the nucleus formed.
- 6th September 2012Name the type of electromagnetic wave used to sterilise medical equipment.
- 7th September 2012A transformer has a primary current of 2.0 A and a primary voltage of 230 V. The secondary voltage is 460 V. Assuming the transformer is 100 percent efficient, calculate the secondary current.
- 8th September 2012A microscope has a x10 eyepiece lens and a x20 objective lens. Calculate the total magnification.
- 9th September 2012Explain what happens to an enzyme above its optimum temperature.
- 10th September 2012Name three non-specific defences of the human body.
- 11th September 2012Explain why reflex responses are faster than voluntary responses.
- 12th September 2012Define community, in ecological terms.
- 13th September 2012Explain why potable water is not the same as pure water.
- 14th September 2012Explain why sodium chloride conducts electricity when molten but not when solid.
- 15th September 2012Convert a concentration of 0.20 moles per cubic decimetre of NaOH into grams per cubic decimetre. (Mr = 40)
- 16th September 2012State the energy transfer that occurs during an exothermic reaction.
- 17th September 2012Name the two industrial methods of cracking.
- 18th September 2012In a chromatography experiment, a dye spot travels 4.5 cm and the solvent front travels 6.0 cm. Calculate its Rf value.
- 19th September 2012Define the resolution of a measuring instrument.
- 20th September 2012Two 4 ohm resistors are connected in series. Calculate the total resistance.
- 21st September 2012Which type of radiation is stopped by a sheet of paper?
- 22nd September 2012Explain, using Newton's Third Law, why a swimmer is able to push themselves forward by pushing backward against the water.
- 23rd September 2012State what happens to the magnetic field around a straight current-carrying wire if the direction of the current is reversed.
- 24th September 2012State what red-shift shows about the motion of most distant galaxies.
- 25th September 2012Why does active transport require energy?
- 26th September 2012Explain 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.
- 27th September 2012State the word equation for aerobic respiration.
- 28th September 2012State one ethical concern raised by embryo screening.
- 29th September 2012Name one way to make a rate of reaction experiment more valid rather than simply more precise.
- 30th September 2012Define an isotope.