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Daily Practice · GCSE Science

September 1968 5-a-day

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September 1968

30 sheets · 150 questions · GCSE

September 1968 compilationAll answers

Every sheet in September 1968

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

  1. 1st September 1968Explain, in terms of gas molecules, why methane and water vapour, as well as carbon dioxide, are described as greenhouse gases.
  2. 2nd September 1968State the equation for gravitational potential energy.
  3. 3rd September 1968A block has a volume of 50 cm^3 and a mass of 135 g. Calculate its density.
  4. 4th September 1968Radium-226 (atomic number 88) decays by alpha emission. State the atomic number of the nucleus formed.
  5. 5th September 1968A water wave has a frequency of 4 Hz and a wavelength of 0.5 m. Calculate its speed.
  6. 6th September 1968A transformer's primary coil is connected to a 12 V supply and has 60 turns. Calculate the number of turns needed on the secondary coil to produce an output of 3.0 V.
  7. 7th September 1968A cube-shaped model cell has sides of length 3 cm. Calculate the surface area to volume ratio of the cube. Give your answer in the form n : 1.
  8. 8th September 1968Explain what happens to an enzyme above its optimum temperature.
  9. 9th September 1968Name three non-specific defences of the human body.
  10. 10th September 1968Define a synapse.
  11. 11th September 1968Give one example of an abiotic factor that could affect where a plant species grows.
  12. 12th September 1968Name the four stages usually considered in a life cycle assessment of a product.
  13. 13th September 1968A student says that metals conduct electricity because they contain free-moving ions. Explain why this statement is incorrect, and give the correct explanation.
  14. 14th September 1968Convert a concentration of 0.20 moles per cubic decimetre of NaOH into grams per cubic decimetre. (Mr = 40)
  15. 15th September 1968State the energy transfer that occurs during an exothermic reaction.
  16. 16th September 1968State the general formula of the alkanes.
  17. 17th September 1968In a chromatography experiment, a dye spot travels 4.5 cm and the solvent front travels 6.0 cm. Calculate its Rf value.
  18. 18th September 1968Define the resolution of a measuring instrument.
  19. 19th September 1968Two 4 ohm resistors are connected in series. Calculate the total resistance.
  20. 20th September 1968Which type of radiation is stopped by a sheet of paper?
  21. 21st September 1968Calculate the momentum of a 1200 kg car travelling at 18 m/s.
  22. 22nd September 1968Explain why a compass needle placed just outside one end of a current-carrying solenoid lines up parallel to the solenoid's axis.
  23. 23rd September 1968Name the second major piece of observational evidence, besides red-shift, that supports the Big Bang model.
  24. 24th September 1968Why does active transport require energy?
  25. 25th September 1968Which type of pathogen causes athlete's foot, a fungal skin infection?
  26. 26th September 1968A student counts 19 pulse beats in 10 seconds immediately after running. Calculate her heart rate in beats per minute.
  27. 27th September 1968State how many chromosomes are found in a normal human body cell, and how they are arranged.
  28. 28th September 1968Name one way to make a rate of reaction experiment more valid rather than simply more precise.
  29. 29th September 1968Define an isotope.
  30. 30th September 1968A sealed flask containing 12.0 g of reactants is shaken and a reaction occurs. What is the total mass afterwards?