Daily Practice · GCSE Science
October 2015 - GCSE Science 5-a-day
Every GCSE Science sheet published in October 2015, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in October 2015
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st October 2015Explain, in terms of blood vessels, how the skin helps to cool the body when it is too hot.
- 2nd October 2015Define speciation.
- 3rd October 2015An atom has atomic number 9 and mass number 19. Calculate the number of neutrons.
- 4th October 2015Why are the noble gases unreactive?
- 5th October 2015How many atoms are there in 0.5 mol of helium?
- 6th October 2015Give one everyday example of an endothermic process.
- 7th October 2015State the catalyst commonly used in the Haber process.
- 8th October 2015Describe the test, and the positive result, for ammonium ions.
- 9th October 2015Convert 3.5 kJ into joules.
- 10th October 2015A current of 2.0 A flows through a resistor for 30 s. Calculate the charge that flows. Use Q = I x t.
- 11th October 2015How is the temperature of a gas related to the motion of its molecules?
- 12th October 2015Define the term 'vector quantity' and give one example.
- 13th October 2015Name the type of electromagnetic wave used to treat cancer by killing cells in a tumour, and state which part of the atom emits it.
- 14th October 2015State one difference between a moon and an artificial satellite.
- 15th October 2015How many pairs of chromosomes are there in a human body cell?
- 16th October 2015Where are most stomata found on a typical leaf, and why?
- 17th October 2015Name four limiting factors of photosynthesis.
- 18th October 2015Define phenotype.
- 19th October 2015State what is meant by the term biodiversity.
- 20th October 2015Give one reason a manufacturer's own life cycle assessment of its product might not be fully objective.
- 21st October 2015Give one use of nanoparticles and one associated risk.
- 22nd October 2015Give the ionic equation for neutralisation.
- 23rd October 2015State what is shown on a rate graph when the line for the volume of gas produced becomes horizontal (flat).
- 24th October 2015Name the type of biological molecule formed when amino acid monomers join together by condensation polymerisation.
- 25th October 2015Explain, in terms of gas molecules, why methane and water vapour, as well as carbon dioxide, are described as greenhouse gases.
- 26th October 2015State the equation for gravitational potential energy.
- 27th October 2015A block has a volume of 50 cm^3 and a mass of 135 g. Calculate its density.
- 28th October 2015Radium-226 (atomic number 88) decays by alpha emission. State the atomic number of the nucleus formed.
- 29th October 2015A radio wave has a wavelength of 3 m. Calculate its frequency, given that all electromagnetic waves travel at 3 x 10^8 m/s in a vacuum.
- 30th October 2015Explain why electricity is transmitted through the National Grid at a very high voltage rather than at the voltage used in homes.
- 31st October 2015A cube-shaped model cell has sides of length 3 cm. Calculate the surface area to volume ratio of the cube. Give your answer in the form n : 1.