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Daily Practice · GCSE Science

January 1979 5-a-day

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January 1979

31 sheets · 155 questions · GCSE

January 1979 compilationAll answers

Every sheet in January 1979

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

  1. 1st January 1979State what happens to the internal energy of a substance as it is heated, in terms of the kinetic and potential energy of its particles.
  2. 2nd January 1979State one source of natural background radiation and one source of artificial (man-made) background radiation.
  3. 3rd January 1979Define the term 'wavelength' of a wave.
  4. 4th January 1979State the difference between an alternator and a dynamo.
  5. 5th January 1979A microscope has a x10 eyepiece lens and a x20 objective lens. Calculate the total magnification.
  6. 6th January 1979What is an enzyme?
  7. 7th January 1979Describe phagocytosis.
  8. 8th January 1979State the type of effector that produces a physical response by contracting.
  9. 9th January 1979Give one example of a biotic factor that could affect a population of rabbits.
  10. 10th January 1979Explain why potable water is not the same as pure water.
  11. 11th January 1979Explain why sodium chloride conducts electricity when molten but not when solid.
  12. 12th January 1979Give the formula for percentage yield.
  13. 13th January 1979A 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.
  14. 14th January 1979Balance the equation for the complete combustion of methane: CH4 + O2 -> CO2 + H2O
  15. 15th January 1979State two advantages of instrumental methods of analysis, such as GC-MS, compared with manual chemical tests.
  16. 16th January 1979Distinguish repeatability from reproducibility.
  17. 17th January 1979How does the resistance of a thermistor change as it gets hotter?
  18. 18th January 1979What is an alpha particle made of?
  19. 19th January 1979State two factors that increase a driver's thinking distance.
  20. 20th January 1979Name a typical material used to make a permanent magnet, and a typical material used to make an induced (temporary) magnet.
  21. 21st January 1979State, in one sentence, what the Big Bang model proposes about the early universe.
  22. 22nd January 1979Explain why a plant cell placed in pure water does not burst.
  23. 23rd January 1979Explain why a small number of healthy volunteers are given a very low dose of a new drug in the first stage of a clinical trial.
  24. 24th January 1979A yeast culture respires without oxygen. Name the two products of this reaction, and name one industrial process that relies on it.
  25. 25th January 1979A man who is a known carrier of cystic fibrosis (Ff) has children with a woman who has been confirmed to carry no cystic fibrosis allele at all (FF). Explain why none of their children can have cystic fibrosis.
  26. 26th January 1979In the rate experiment where a cross disappears, why is the result subjective?
  27. 27th January 1979An atom has an atomic number of 17 and a mass number of 37. How many neutrons does it have?
  28. 28th January 1979Calculate the number of moles in 20 g of calcium carbonate. (Mr = 100)
  29. 29th January 1979Concentrated sodium chloride solution (brine) is electrolysed using inert electrodes. State the products formed at the cathode and at the anode.
  30. 30th January 1979Explain why increasing temperature increases the rate of a reaction, referring to both the frequency and the energy of collisions.
  31. 31st January 1979A solid gives a lilac flame test. Name the metal ion present.