Daily Practice · GCSE Science
December 2002 - GCSE Science 5-a-day
Every GCSE Science sheet published in December 2002, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in December 2002
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st December 2002Write the formula of calcium chloride and explain the ratio.
- 2nd December 2002State the name given to a reaction in which a substance loses electrons.
- 3rd December 2002Hydrogen reacts with chlorine to form hydrogen chloride: H2 + Cl2 -> 2HCl. Use the bond energies given to calculate the overall energy change for this reaction. Bond energies: H-H = 436 kJ/mol, Cl-Cl = 243 kJ/mol, H-Cl = 432 kJ/mol.
- 4th December 2002State the type of reaction that occurs when bromine adds across the double bond of an alkene.
- 5th December 2002Give two processes that removed carbon dioxide from the early atmosphere.
- 6th December 2002Calculate the kinetic energy of a 2.0 kg trolley moving at 4.0 m/s.
- 7th December 2002Give the equation linking energy transferred, charge flow and potential difference.
- 8th December 2002Who provided the evidence for the existence of the neutron, and roughly when relative to the nuclear model?
- 9th December 2002Explain why a rucksack with wide, padded straps is more comfortable to carry than one with thin straps, for the same load.
- 10th December 2002State the three factors needed for a current-carrying wire to experience a force due to the motor effect.
- 11th December 2002Why does taking repeat readings and calculating a mean improve the data?
- 12th December 2002Explain why the rate of an enzyme-controlled reaction decreases sharply above the enzyme's optimum temperature.
- 13th December 2002State two ways measles is prevented from spreading.
- 14th December 2002A patient's core body temperature has fallen to 35 degrees Celsius. State two physical responses their body makes to raise it back toward normal.
- 15th December 2002Explain one reason it took many years for Darwin's theory of evolution by natural selection to become widely accepted.
- 16th December 2002Write the electronic structure of an atom with 12 electrons.
- 17th December 2002Give two observations when lithium is added to water.
- 18th December 2002State the value of the Avogadro constant and what it counts.
- 19th December 2002A reaction profile shows the reactants at 220 kJ and the products at 340 kJ. State whether the reaction is exothermic or endothermic.
- 20th December 2002State what is meant by dynamic equilibrium.
- 21st December 2002Write the ionic equation for the precipitation reaction between barium ions and sulfate ions.
- 22nd December 2002Write the equation linking power, energy and time, and rearrange it for time.
- 23rd December 2002State the UK mains supply frequency and typical potential difference.
- 24th December 2002A gas is heated in a sealed rigid container. Explain what happens to the pressure.
- 25th December 2002A skydiver reaches terminal velocity during free fall. Explain what is meant by 'terminal velocity'.
- 26th December 2002State the seven regions of the electromagnetic spectrum in order of increasing frequency.
- 27th December 2002State what provides the centripetal force that keeps a planet in orbit around the Sun.
- 28th December 2002Define an undifferentiated cell.
- 29th December 2002Which tissue transports water and mineral ions from the roots?
- 30th December 2002Give three uses of the glucose produced in photosynthesis.
- 31st December 2002Define the term allele.