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Daily Practice · GCSE Science

October 1983 5-a-day

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October 1983

31 sheets · 155 questions · GCSE

October 1983 compilationAll answers

Every sheet in October 1983

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

  1. 1st October 1983A 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.
  2. 2nd October 1983Name the process used to separate crude oil into fractions.
  3. 3rd October 1983State two advantages of instrumental methods of analysis, such as GC-MS, compared with manual chemical tests.
  4. 4th October 1983Distinguish repeatability from reproducibility.
  5. 5th October 1983How does the resistance of a thermistor change as it gets hotter?
  6. 6th October 1983What is an alpha particle made of?
  7. 7th October 1983State Newton's First Law of Motion.
  8. 8th October 1983Two bar magnets are placed with their north poles facing each other. State what happens to the magnets.
  9. 9th October 1983State what is meant by red-shift.
  10. 10th October 1983Explain why a plant cell placed in pure water does not burst.
  11. 11th October 1983State one way that pathogens can be spread from person to person.
  12. 12th October 1983Explain why breathing rate and breathing depth both increase during exercise.
  13. 13th October 1983In pea plants, purple flower colour (allele H) is dominant over white flower colour (allele h). State the phenotype of a plant with genotype Hh.
  14. 14th October 1983In the rate experiment where a cross disappears, why is the result subjective?
  15. 15th October 1983An atom has an atomic number of 17 and a mass number of 37. How many neutrons does it have?
  16. 16th October 1983Calculate the number of moles in 20 g of calcium carbonate. (Mr = 100)
  17. 17th October 1983State the two materials commonly used as inert electrodes in electrolysis, and explain why they must be inert.
  18. 18th October 1983Explain how a catalyst increases the rate of a reaction without being used up.
  19. 19th October 1983A solid gives a lilac flame test. Name the metal ion present.
  20. 20th October 1983Name the two additional products that can form during the incomplete combustion of a hydrocarbon fuel.
  21. 21st October 1983Give the equation for efficiency in terms of energy.
  22. 22nd October 1983Calculate the mass of 0.5 cubic metres of a material of density 2400 kilograms per cubic metre.
  23. 23rd October 1983State whether friction is a contact force or a non-contact force.
  24. 24th October 1983Give one everyday example of a transverse wave and one everyday example of a longitudinal wave.
  25. 25th October 1983State what happens to the orbital speed needed for a stable orbit as the orbital radius increases.
  26. 26th October 1983State the function of the mitochondria.
  27. 27th October 1983Which component of blood transports carbon dioxide, urea and hormones?
  28. 28th October 1983Complete the word equation for anaerobic respiration in yeast: glucose -> ___ + ___
  29. 29th October 1983Explain why type 1 diabetes is treated with insulin injections rather than tablets.
  30. 30th October 1983A student places ten 1 m x 1 m quadrats at random across a school field of area 3000 m2 and counts a total of 45 dandelions across all ten quadrats. Estimate the total number of dandelions on the field.
  31. 31st October 1983Give one reason distillation of seawater requires a large energy input.