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Daily Practice · GCSE Science

May 1981 5-a-day

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May 1981

31 sheets · 155 questions · GCSE

May 1981 compilationAll answers

Every sheet in May 1981

The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.

  1. 1st May 1981Explain why burning a fuel can produce nitrogen oxides even if the fuel itself contains no nitrogen.
  2. 2nd May 1981Name three renewable energy resources.
  3. 3rd May 1981State the equation for density.
  4. 4th May 1981Calculate the weight of an object of mass 8.0 kg on Earth, where g = 9.8 N/kg.
  5. 5th May 1981A wave has a period of 0.005 s. Calculate its frequency.
  6. 6th May 1981State the difference between a natural satellite and an artificial satellite, and give one example of each.
  7. 7th May 1981Why is a stain such as iodine used when preparing a slide?
  8. 8th May 1981Give two adaptations of a red blood cell.
  9. 9th May 1981Name the gas that is released as a product of photosynthesis.
  10. 10th May 1981Name the hormone that causes the liver to convert stored glycogen back into glucose.
  11. 11th May 1981Explain why a pyramid of biomass is never wider at the top than at the bottom.
  12. 12th May 1981Explain why potable water is not required to be chemically pure.
  13. 13th May 1981Define a covalent bond.
  14. 14th May 1981State the name given to a reaction in which a substance loses electrons.
  15. 15th May 1981State the difference between a rechargeable cell and a non-rechargeable cell.
  16. 16th May 1981State the type of reaction that occurs when bromine adds across the double bond of an alkene.
  17. 17th May 1981Give two processes that removed carbon dioxide from the early atmosphere.
  18. 18th May 1981Calculate the kinetic energy of a 2.0 kg trolley moving at 4.0 m/s.
  19. 19th May 1981Calculate the current drawn by a 1150 W kettle on a 230 V supply.
  20. 20th May 1981State the approximate radius of a nucleus compared with the radius of an atom.
  21. 21st May 1981Explain why a rucksack with wide, padded straps is more comfortable to carry than one with thin straps, for the same load.
  22. 22nd May 1981State the three factors needed for a current-carrying wire to experience a force due to the motor effect.
  23. 23rd May 1981State the difference between resolution and accuracy.
  24. 24th May 1981Explain why the rate of an enzyme-controlled reaction decreases sharply above the enzyme's optimum temperature.
  25. 25th May 1981How do bacteria make a person feel ill?
  26. 26th May 1981A patient's core body temperature has fallen to 35 degrees Celsius. State two physical responses their body makes to raise it back toward normal.
  27. 27th May 1981Explain one reason it took many years for Darwin's theory of evolution by natural selection to become widely accepted.
  28. 28th May 1981Write the electronic structure of an atom with 12 electrons.
  29. 29th May 1981On what property are elements ordered in the modern periodic table?
  30. 30th May 1981In the equation 2H2 + O2 gives 2H2O, how many moles of water are formed from 3 mol of hydrogen?
  31. 31st May 1981A reaction profile shows the reactants at 220 kJ and the products at 340 kJ. State whether the reaction is exothermic or endothermic.