Daily Practice · GCSE Science
December 2009 - GCSE Science 5-a-day
Every GCSE Science sheet published in December 2009, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in December 2009
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st December 2009Explain, in terms of electrons, why reactivity decreases going down Group 7.
- 2nd December 2009Explain why potassium is more reactive than sodium.
- 3rd December 2009Calculate the number of moles in 88 g of carbon dioxide. (Mr = 44)
- 4th December 2009Explain, in terms of bonds, why breaking bonds is an endothermic process.
- 5th December 2009State Le Chatelier's principle in your own words.
- 6th December 2009A 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 2009A device transfers 4500 J in 90 s. Calculate its power.
- 8th December 2009In a series circuit, the current through one lamp is 0.30 A. State the current through a second lamp in the same circuit.
- 9th December 2009Why does a bicycle pump get warm when used?
- 10th December 2009On a velocity-time graph, what does the area between the line and the time axis represent?
- 11th December 2009State the speed of all electromagnetic waves travelling through a vacuum.
- 12th December 2009State the name of the force that keeps a satellite in orbit around the Earth.
- 13th December 2009What happens to the DNA before mitosis begins?
- 14th December 2009State two conditions that increase the rate of transpiration.
- 15th December 2009A lamp is moved from 15 cm to 30 cm away. What happens to the light intensity?
- 16th December 2009A plant grown in the shade is shorter than a genetically identical plant of the same species grown in full sunlight. State whether this difference is genetic variation, environmental variation, or both.
- 17th December 2009Name the biological process that removes carbon dioxide from the atmosphere and converts it into carbon compounds in a plant.
- 18th December 2009State one environmental benefit of recycling aluminium cans rather than making new aluminium from ore.
- 19th December 2009Explain why graphite conducts electricity but diamond does not.
- 20th December 2009State what is observed when magnesium ribbon is added to copper sulfate solution.
- 21st December 2009State the equation for the mean rate of a reaction in terms of the quantity of reactant used.
- 22nd December 2009Name the small molecule typically released as a by-product during condensation polymerisation.
- 23rd December 2009Describe, in terms of wavelength, the difference between the radiation the Earth receives from the Sun and the radiation it re-emits from its surface.
- 24th December 2009Calculate the kinetic energy of a 0.5 kg ball moving at 6 m/s.
- 25th December 2009State what happens to the internal energy of a substance as it is heated, in terms of the kinetic and potential energy of its particles.
- 26th December 2009Explain why americium-241, an alpha emitter, is suitable for use in a smoke detector.
- 27th December 2009A water wave has a frequency of 4 Hz and a wavelength of 0.5 m. Calculate its speed.
- 28th December 2009A transformer's primary coil is connected to a 12 V supply and has 60 turns. Calculate the number of turns needed on the secondary coil to produce an output of 3.0 V.
- 29th December 2009A microscope has a x10 eyepiece lens and a x20 objective lens. Calculate the total magnification.
- 30th December 2009Where is bile made and where is it stored?
- 31st December 2009Why does a vaccinated person not usually become ill when they meet the pathogen?