Daily Practice · GCSE Science
December 1994 - GCSE Science 5-a-day
Every sheet in December 1994
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st December 1994State one difference between selective breeding and genetic engineering.
- 2nd December 1994State one way in which high biodiversity benefits an ecosystem.
- 3rd December 1994Explain how painting an iron gate helps prevent it from rusting.
- 4th December 1994Why can an ionic solid not conduct electricity?
- 5th December 1994Name the salt made from zinc oxide and nitric acid.
- 6th December 1994State what is meant by a catalyst.
- 7th December 1994State the functional group found in all carboxylic acids.
- 8th December 1994Explain, in one sentence, why the oceans were able to form only after the early Earth had cooled.
- 9th December 1994Define specific heat capacity.
- 10th December 1994A 1.5 kg block of iron is heated from 18 degrees C to 98 degrees C. The specific heat capacity of iron is 450 J/(kg degrees C). Calculate the change in thermal energy.
- 11th December 1994State the number of protons and the number of neutrons in an alpha particle.
- 12th December 1994State the speed at which all electromagnetic waves travel through a vacuum.
- 13th December 1994A transformer has 500 turns on its primary coil and 2500 turns on its secondary coil. State, with a reason, whether this is a step-up or a step-down transformer.
- 14th December 1994State one structure found in a bacterial cell but not in an animal cell.
- 15th December 1994Why does a food test for sugars need a water bath?
- 16th December 1994Explain what is meant by a double blind trial.
- 17th December 1994Name the two parts of the central nervous system (CNS).
- 18th December 1994Name the group of organisms that break down dead plant and animal matter, returning mineral ions to the soil.
- 19th December 1994Define a finite resource, giving one example.
- 20th December 1994State one reason why simple covalent substances such as chlorine have low melting points.
- 21st December 1994Give the formula for atom economy.
- 22nd December 1994Explain, in terms of the reaction pathway, why adding a catalyst increases the rate of a reaction without changing the overall energy change of the reaction.
- 23rd December 1994Hexadecane (C16H34) is cracked to produce dodecane (C12H26) and one other product. Calculate the molecular formula of the other product.
- 24th December 1994State one advantage of running known reference substances alongside an unknown sample on the same chromatogram, rather than only comparing to published Rf values.
- 25th December 1994How is the uncertainty in a set of repeated readings usually estimated?
- 26th December 1994Define electric current.
- 27th December 1994A source has a half-life of 5 days and an initial activity of 1600 Bq. What is its activity after 15 days?
- 28th December 1994A resultant force of 60 N acts on a wheelbarrow of mass 15 kg. Calculate its acceleration.
- 29th December 1994State the difference between a permanent magnet and an induced magnet.
- 30th December 1994State whether a galaxy moving towards Earth would show a red-shift or a blue-shift in its light.
- 31st December 1994Calculate the surface area to volume ratio of a cube of side 2 cm.