Daily Practice · GCSE Science
December 1998 - GCSE Science 5-a-day
Every sheet in December 1998
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st December 1998Write the electronic structure of an atom with 12 electrons.
- 2nd December 1998Explain why potassium is more reactive than sodium.
- 3rd December 1998Calculate the number of moles in 88 g of carbon dioxide. (Mr = 44)
- 4th December 1998A reaction profile shows the reactants at 220 kJ and the products at 340 kJ. State whether the reaction is exothermic or endothermic.
- 5th December 1998State the two named reactants used in the Haber process.
- 6th December 1998A solution gives a cream precipitate when acidified with dilute nitric acid and then treated with silver nitrate solution. Name the halide ion present.
- 7th December 1998A device transfers 4500 J in 90 s. Calculate its power.
- 8th December 1998State the UK mains supply frequency and typical potential difference.
- 9th December 1998Why does a bicycle pump get warm when used?
- 10th December 1998A 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.
- 11th December 1998An X-ray has a wavelength of 1 x 10^-10 m. Calculate its frequency (speed of light = 3 x 10^8 m/s).
- 12th December 1998A 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.
- 13th December 1998What happens to the DNA before mitosis begins?
- 14th December 1998State two conditions that increase the rate of transpiration.
- 15th December 1998A lamp is moved from 15 cm to 30 cm away. What happens to the light intensity?
- 16th December 1998Give one piece of evidence that supports Darwin's theory of evolution by natural selection.
- 17th December 1998Name the biological process that removes carbon dioxide from the atmosphere and converts it into carbon compounds in a plant.
- 18th December 1998State one environmental benefit of recycling aluminium cans rather than making new aluminium from ore.
- 19th December 1998Explain why graphite conducts electricity but diamond does not.
- 20th December 1998State what is observed when magnesium ribbon is added to copper sulfate solution.
- 21st December 1998State the equation for the mean rate of a reaction in terms of the quantity of reactant used.
- 22nd December 1998Name the two methods used to produce ethanol industrially.
- 23rd December 1998Explain, in one sentence, why the oceans were able to form only after the early Earth had cooled.
- 24th December 1998Calculate the kinetic energy of a 0.5 kg ball moving at 6 m/s.
- 25th December 1998A 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.
- 26th December 1998Explain why americium-241, an alpha emitter, is suitable for use in a smoke detector.
- 27th December 1998State whether sound waves are transverse or longitudinal.
- 28th December 1998State the name of the component at the centre of a transformer's primary and secondary coils, and state its purpose.
- 29th December 1998State one structure found in a bacterial cell but not in an animal cell.
- 30th December 1998Where is bile made and where is it stored?
- 31st December 1998Why does a vaccinated person not usually become ill when they meet the pathogen?