Daily Practice · GCSE Science
June 1982 5-a-day
Every sheet in June 1982
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st June 1982A source has a half-life of 5 days and an initial activity of 1600 Bq. What is its activity after 15 days?
- 2nd June 1982A resultant force of 60 N acts on a wheelbarrow of mass 15 kg. Calculate its acceleration.
- 3rd June 1982State the difference between a permanent magnet and an induced magnet.
- 4th June 1982State whether a galaxy moving towards Earth would show a red-shift or a blue-shift in its light.
- 5th June 1982Calculate the surface area to volume ratio of a cube of side 2 cm.
- 6th June 1982State one way that pathogens can be spread from person to person.
- 7th June 1982State two things excess glucose can be converted into for storage in the human body.
- 8th June 1982Define homozygous.
- 9th June 1982Give the resolution of a burette that can be read to the nearest half of a small division.
- 10th June 1982Why is an atom electrically neutral?
- 11th June 1982State the law of conservation of mass.
- 12th June 1982Molten zinc chloride, ZnCl2, is electrolysed using inert electrodes. Write the half equation for the reaction at (a) the cathode, and (b) the anode.
- 13th June 1982A 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.
- 14th June 1982Give one piece of evidence that a solid sample is impure, based on its melting behaviour.
- 15th June 1982Explain why carbon monoxide is dangerous even though it has no smell.
- 16th June 1982Why can no device be 100 percent efficient?
- 17th June 1982Why is melting described as a physical change?
- 18th June 1982State whether friction is a contact force or a non-contact force.
- 19th June 1982State the difference between a transverse wave and a longitudinal wave.
- 20th June 1982Name the force that keeps the planets in orbit around the Sun.
- 21st June 1982Convert 0.05 mm into micrometres.
- 22nd June 1982State the function of the valves in the heart and in veins.
- 23rd June 1982Complete the word equation for anaerobic respiration in yeast: glucose -> ___ + ___
- 24th June 1982Explain why sweating cools the body down.
- 25th June 1982The Arctic fox has small, rounded ears compared with the desert fennec fox, which has very large ears. State whether this is a structural, behavioural or functional adaptation, and explain how it helps the Arctic fox survive.
- 26th June 1982Give one reason distillation of seawater requires a large energy input.
- 27th June 1982Write the formula of calcium chloride and explain the ratio.
- 28th June 1982A student reacts 2.4 g of magnesium with excess dilute hydrochloric acid: Mg + 2HCl -> MgCl2 + H2. Relative atomic mass of Mg = 24. Calculate the number of moles of hydrogen gas produced.
- 29th June 1982Hydrogen reacts with chlorine to form hydrogen chloride: H2 + Cl2 -> 2HCl. Use the bond energies given to calculate the overall energy change for this reaction. Bond energies: H-H = 436 kJ/mol, Cl-Cl = 243 kJ/mol, H-Cl = 432 kJ/mol.
- 30th June 1982Name the catalyst used when an alkene reacts with hydrogen to form an alkane.