Daily Practice · GCSE Science
October 2004 - GCSE Science 5-a-day
Every GCSE Science sheet published in October 2004, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in October 2004
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st October 2004Explain one reason it took many years for Darwin's theory of evolution by natural selection to become widely accepted.
- 2nd October 2004State the relative charge of a neutron.
- 3rd October 2004Why are the noble gases unreactive?
- 4th October 2004How many atoms are there in 0.5 mol of helium?
- 5th October 2004A reaction profile shows the reactants at 150 kJ and the peak (activation energy point) at 195 kJ. Calculate the activation energy.
- 6th October 2004State what is meant by dynamic equilibrium.
- 7th October 2004Describe the test, and the positive result, for ammonium ions.
- 8th October 2004Convert 3.5 kJ into joules.
- 9th October 2004A 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.
- 10th October 2004How is the temperature of a gas related to the motion of its molecules?
- 11th October 2004A skydiver reaches terminal velocity during free fall. Explain what is meant by 'terminal velocity'.
- 12th October 2004State the seven regions of the electromagnetic spectrum in order of increasing frequency.
- 13th October 2004State what provides the centripetal force that keeps a planet in orbit around the Sun.
- 14th October 2004How many pairs of chromosomes are there in a human body cell?
- 15th October 2004Where are most stomata found on a typical leaf, and why?
- 16th October 2004Name four limiting factors of photosynthesis.
- 17th October 2004Define the term allele.
- 18th October 2004State what is meant by the term biodiversity.
- 19th October 2004Give one reason a manufacturer's own life cycle assessment of its product might not be fully objective.
- 20th October 2004Give one use of nanoparticles and one associated risk.
- 21st October 2004Give the ionic equation for neutralisation.
- 22nd October 2004State what is shown on a rate graph when the line for the volume of gas produced becomes horizontal (flat).
- 23rd October 2004Explain why carboxylic acids are described as 'weak acids'.
- 24th October 2004Name the two gases produced by photosynthesis and the substance it consumes alongside carbon dioxide.
- 25th October 2004State the equation for gravitational potential energy.
- 26th October 2004Name the change of state when a liquid becomes a gas throughout the liquid, at its boiling point.
- 27th October 2004Radium-226 (atomic number 88) decays by alpha emission. State the atomic number of the nucleus formed.
- 28th October 2004Explain why ultraviolet radiation can be harmful to human skin.
- 29th October 2004State two ways of inducing a potential difference across a conductor using a magnetic field.
- 30th October 2004A 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).
- 31st October 2004Explain what happens to an enzyme above its optimum temperature.