Daily Practice · GCSE Science
February 2015 - GCSE Science 5-a-day
Every GCSE Science sheet published in February 2015, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in February 2015
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st February 2015Calculate the mass of 0.25 mol of sodium hydroxide, NaOH. (Na = 23, O = 16, H = 1)
- 2nd February 2015A reaction profile shows the reactants at 220 kJ and the products at 340 kJ. State whether the reaction is exothermic or endothermic.
- 3rd February 2015State the two named reactants used in the Haber process.
- 4th February 2015State the flame test colour for sodium ions.
- 5th February 2015Calculate the gravitational potential energy gained by a 60 kg person climbing 5 m. (g = 9.8 N/kg)
- 6th February 2015State the UK mains supply frequency and typical potential difference.
- 7th February 2015A gas at 200 kPa occupies 3.0 cubic metres. It is compressed to 1.5 cubic metres at constant temperature. Calculate the new pressure.
- 8th February 2015A ball decelerates uniformly from 18 m/s to 0 m/s over a distance of 2.7 m while being caught. Using (final velocity)^2 = (initial velocity)^2 + 2 x acceleration x distance, calculate its deceleration.
- 9th February 2015An X-ray has a wavelength of 1 x 10^-10 m. Calculate its frequency (speed of light = 3 x 10^8 m/s).
- 10th February 2015A satellite in a stable, small-radius, close orbit around the Earth is compared with a satellite in a stable, large-radius, distant orbit. State which of the two satellites has the greater orbital speed.
- 11th February 2015State three functions of mitosis.
- 12th February 2015What happens to guard cells when a plant is short of water?
- 13th February 2015Write the word equation for photosynthesis.
- 14th February 2015Give one piece of evidence that supports Darwin's theory of evolution by natural selection.
- 15th February 2015State one method used to try to maintain biodiversity.
- 16th February 2015Explain, using the reactivity series, why attaching blocks of zinc to the hull of a steel ship helps prevent the steel from rusting.
- 17th February 2015Why is graphite soft and slippery?
- 18th February 2015Explain the difference between a strong acid and a concentrated acid.
- 19th February 2015A reaction between calcium carbonate and hydrochloric acid produces 72 cm3 of carbon dioxide gas in 30 seconds. Calculate the mean rate of reaction.
- 20th February 2015Name the two methods used to produce ethanol industrially.
- 21st February 2015Explain, in one sentence, why the oceans were able to form only after the early Earth had cooled.
- 22nd February 2015Name four energy stores.
- 23rd February 2015A 1.5 kg block of iron is heated from 18 degrees C to 98 degrees C. The specific heat capacity of iron is 450 J/(kg degrees C). Calculate the change in thermal energy.
- 24th February 2015State one source of natural background radiation and one source of artificial (man-made) background radiation.
- 25th February 2015State whether sound waves are transverse or longitudinal.
- 26th February 2015State the name of the component at the centre of a transformer's primary and secondary coils, and state its purpose.
- 27th February 2015State one structure found in a bacterial cell but not in an animal cell.
- 28th February 2015What is an enzyme?