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Daily Practice · GCSE Science

August 1980 5-a-day

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August 1980

31 sheets · 155 questions · GCSE

August 1980 compilationAll answers

Every sheet in August 1980

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

  1. 1st August 1980A 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).
  2. 2nd August 1980What is an enzyme?
  3. 3rd August 1980Describe phagocytosis.
  4. 4th August 1980Name the two parts of the central nervous system (CNS).
  5. 5th August 1980Name the group of organisms that break down dead plant and animal matter, returning mineral ions to the soil.
  6. 6th August 1980State the two main steps used to produce potable water from a fresh water source.
  7. 7th August 1980State the charge on a calcium ion (Group 2).
  8. 8th August 1980Give the formula for percentage yield.
  9. 9th August 1980A student reacts excess zinc powder with 25 cm3 of copper sulfate solution in a polystyrene cup. The starting temperature is 21.0 degrees C and the maximum temperature reached is 58.5 degrees C. Calculate the temperature change.
  10. 10th August 1980Hexadecane (C16H34) is cracked to produce dodecane (C12H26) and one other product. Calculate the molecular formula of the other product.
  11. 11th August 1980State two advantages of instrumental methods of analysis, such as GC-MS, compared with manual chemical tests.
  12. 12th August 1980Distinguish repeatability from reproducibility.
  13. 13th August 1980How does the resistance of a thermistor change as it gets hotter?
  14. 14th August 1980What is an alpha particle made of?
  15. 15th August 1980A resultant force of 60 N acts on a wheelbarrow of mass 15 kg. Calculate its acceleration.
  16. 16th August 1980State the difference between a permanent magnet and an induced magnet.
  17. 17th August 1980State whether a galaxy moving towards Earth would show a red-shift or a blue-shift in its light.
  18. 18th August 1980Explain why a plant cell placed in pure water does not burst.
  19. 19th August 1980Name the vector that spreads the protist pathogen that causes malaria.
  20. 20th August 1980State two things excess glucose can be converted into for storage in the human body.
  21. 21st August 1980Define homozygous.
  22. 22nd August 1980In the rate experiment where a cross disappears, why is the result subjective?
  23. 23rd August 1980An atom has an atomic number of 17 and a mass number of 37. How many neutrons does it have?
  24. 24th August 1980Calculate the number of moles in 20 g of calcium carbonate. (Mr = 100)
  25. 25th August 1980Molten zinc chloride, ZnCl2, is electrolysed using inert electrodes. Write the half equation for the reaction at (a) the cathode, and (b) the anode.
  26. 26th August 1980A tangent drawn to a volume-time graph at 15 seconds passes through the points (5 s, 6 cm3) and (25 s, 66 cm3). Calculate the rate of reaction at 15 seconds.
  27. 27th August 1980A solid gives a lilac flame test. Name the metal ion present.
  28. 28th August 1980Name the two additional products that can form during the incomplete combustion of a hydrocarbon fuel.
  29. 29th August 1980Give the equation for efficiency in terms of energy.
  30. 30th August 1980Calculate the mass of 0.5 cubic metres of a material of density 2400 kilograms per cubic metre.
  31. 31st August 1980A gardener pushes a mower with a force of 60 N through a distance of 8.0 m. Calculate the work done. Use W = F x s.