Daily Practice · GCSE Science
June 2003 - GCSE Science 5-a-day
Every GCSE Science sheet published in June 2003, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in June 2003
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st June 2003A reaction profile shows the reactants at 150 kJ and the peak (activation energy point) at 195 kJ. Calculate the activation energy.
- 2nd June 2003In the Haber process, N2(g) + 3H2(g) -> 2NH3(g), state the effect of decreasing the pressure on the position of equilibrium.
- 3rd June 2003Why must dilute nitric acid be added before silver nitrate solution when testing for a halide ion?
- 4th June 2003State the equation for work done.
- 5th June 2003A component has a current of 5.0 A and a resistance of 8.0 ohm. Calculate the power dissipated using P = I^2 x R.
- 6th June 2003State the relationship between pressure and volume for a fixed mass of gas at constant temperature.
- 7th June 2003A train travels at a constant velocity of 40 m/s for 3 minutes. Calculate the distance it travels, in km.
- 8th June 2003A microwave oven uses electromagnetic waves with a wavelength of 0.12 m. Calculate the frequency of these waves (speed of light = 3 x 10^8 m/s).
- 9th June 2003Put the following in order of increasing distance from the Sun: Mars, Venus, Saturn, Earth.
- 10th June 2003Where in a plant are stem cells found?
- 11th June 2003Name the process by which dissolved sugars are transported in the phloem.
- 12th June 2003Why is photosynthesis described as endothermic?
- 13th June 2003Name the three-domain system of classification, and name the scientist most associated with proposing it.
- 14th June 2003State one human activity that reduces the amount of land available for other organisms.
- 15th June 2003State the two substances that must both be present for iron to rust.
- 16th June 2003State the size range of a nanoparticle.
- 17th June 2003Why is aluminium extracted by electrolysis rather than by reduction with carbon?
- 18th June 2003Explain, using collision theory, why increasing the concentration of a reactant in solution increases the rate of a reaction.
- 19th June 2003State the functional group found in all alcohols.
- 20th June 2003Name the two gases produced by photosynthesis and the substance it consumes alongside carbon dioxide.
- 21st June 2003What happens to the energy described as 'wasted' in a transfer?
- 22nd June 2003Name the change of state when a liquid becomes a gas throughout the liquid, at its boiling point.
- 23rd June 2003Explain the difference between irradiation and contamination.
- 24th June 2003State what happens to the frequency of a wave when it is refracted as it passes into a different material.
- 25th June 2003State two factors that increase the size of the potential difference induced in a coil.
- 26th June 2003A student views a red blood cell at a magnification of x2000. The image of the cell measures 20 mm across. Calculate the real width of the cell, giving your answer in micrometres (um).
- 27th June 2003Name the products of protein digestion.
- 28th June 2003State the difference between an antibiotic and a painkiller.
- 29th June 2003Put these into the correct order for a reflex arc: motor neuron, receptor, effector, relay neuron, sensory neuron.
- 30th June 2003State one structural adaptation of a polar bear that helps it survive in a cold environment.