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Daily Practice · GCSE Science

July 1992 5-a-day

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July 1992

31 sheets · 155 questions · GCSE

July 1992 compilationAll answers

Every sheet in July 1992

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

  1. 1st July 1992Explain why sodium chloride conducts electricity when molten but not when solid.
  2. 2nd July 1992Convert 250 cubic centimetres into cubic decimetres.
  3. 3rd July 1992A student heats solid copper carbonate strongly in a test tube, and it breaks down into copper oxide and carbon dioxide. Heating must be continued throughout the reaction for it to keep going. State whether this thermal decomposition reaction is exothermic or endothermic, and explain your reasoning.
  4. 4th July 1992State two products, other than water, that can be formed during the incomplete combustion of a hydrocarbon.
  5. 5th July 1992Write the formula for calculating an Rf value.
  6. 6th July 1992Readings have a mean of 20.0 cm and a range of 1.0 cm. Calculate the percentage uncertainty.
  7. 7th July 1992What happens to the total resistance when a second resistor is added in parallel, and why?
  8. 8th July 1992What happens inside the nucleus when a beta particle is emitted?
  9. 9th July 1992Explain why a larger vehicle mass increases braking distance.
  10. 10th July 1992State the type of force that always acts between an induced magnet and the magnet that induced it.
  11. 11th July 1992Name the model of the origin of the universe that is supported by red-shift observations.
  12. 12th July 1992State three factors that increase the rate of diffusion.
  13. 13th July 1992Explain 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.
  14. 14th July 1992Define oxygen debt.
  15. 15th July 1992Explain one benefit of the Human Genome Project.
  16. 16th July 1992What does 'concordant' mean when applied to titres?
  17. 17th July 1992What did the alpha scattering experiment show that the plum pudding model could not explain?
  18. 18th July 1992Magnesium is burned in an open crucible and the mass increases. Explain why.
  19. 19th July 1992Explain why solid sodium chloride does not conduct electricity, but molten sodium chloride does.
  20. 20th July 1992In the gas-volume required practical measuring how concentration affects rate, state one variable that should be controlled.
  21. 21st July 1992Describe the result of the test for carbon dioxide.
  22. 22nd July 1992Give one piece of evidence used to link human activity to recent climate change.
  23. 23rd July 1992Give one advantage and one disadvantage of wind power.
  24. 24th July 1992Why does the temperature stay constant while a substance boils?
  25. 25th July 1992A cyclist rides 300 m north then 300 m back south to the start. State the total distance travelled and total displacement.
  26. 26th July 1992A wave travels from air into glass and slows down. State what happens to its direction, and explain why in terms of wavelength.
  27. 27th July 1992State what a nebula is, and explain its role in the life cycle of a star.
  28. 28th July 1992Where is the DNA found in a bacterial cell?
  29. 29th July 1992Name the substance in red blood cells that binds oxygen.
  30. 30th July 1992A lamp is placed 10 cm from pondweed. Calculate the relative light intensity using relative light intensity = 1 / distance^2.
  31. 31st July 1992Name the hormone released by the adrenal glands that prepares the body for fight or flight.