Daily Practice · GCSE Science
January 2007 - GCSE Science 5-a-day
Every GCSE Science sheet published in January 2007, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in January 2007
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st January 2007Why do elements in the same group have similar chemical properties?
- 2nd January 2007Why is the amount of product directly proportional to the amount of limiting reactant?
- 3rd January 2007A reaction profile shows the reactants at 220 kJ and the products at 340 kJ. State whether the reaction is exothermic or endothermic.
- 4th January 2007In the Haber process, N2(g) + 3H2(g) -> 2NH3(g), state the effect of decreasing the pressure on the position of equilibrium.
- 5th January 2007A solution forms a green precipitate with sodium hydroxide solution. Which ion is present?
- 6th January 2007Give the equation for wave speed and its units.
- 7th January 2007State the UK mains supply frequency and typical potential difference.
- 8th January 2007Why does reducing the volume of a gas increase the pressure even though the molecules do not speed up?
- 9th January 2007A train travels at a constant velocity of 40 m/s for 3 minutes. Calculate the distance it travels, in km.
- 10th January 2007A 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).
- 11th January 2007Put the following in order of increasing distance from the Sun: Mars, Venus, Saturn, Earth.
- 12th January 2007Give one risk of stem cell treatment.
- 13th January 2007Why does a potometer measure water uptake rather than transpiration directly?
- 14th January 2007Why does the rate of photosynthesis fall at very high temperatures?
- 15th January 2007Name the three-domain system of classification, and name the scientist most associated with proposing it.
- 16th January 2007Explain why large-scale deforestation increases the concentration of carbon dioxide in the atmosphere.
- 17th January 2007State the four stages considered in a life cycle assessment.
- 18th January 2007Why does simple molecular carbon dioxide have a much lower melting point than giant covalent silicon dioxide?
- 19th January 2007Define oxidation in terms of electrons.
- 20th January 2007State two units that the rate of a reaction can be measured in.
- 21st January 2007State the functional group found in all alcohols.
- 22nd January 2007Explain, in one sentence, why the oceans were able to form only after the early Earth had cooled.
- 23rd January 2007A 3 kg object is raised 2 m. Calculate the gravitational potential energy gained. (g = 9.8 N/kg)
- 24th January 2007A 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.
- 25th January 2007A GM tube detects a count rate of 240 counts per minute from a source. After 15 days the count rate has fallen to 30 counts per minute. Show that this data is consistent with a half-life of 5 days.
- 26th January 2007State what happens to the frequency of a wave when it is refracted as it passes into a different material.
- 27th January 2007State two factors that increase the size of the potential difference induced in a coil.
- 28th January 2007State one structure found in a bacterial cell but not in an animal cell.
- 29th January 2007State two functions of bile.
- 30th January 2007What is an antigen?
- 31st January 2007Put these into the correct order for a reflex arc: motor neuron, receptor, effector, relay neuron, sensory neuron.