Daily Practice · GCSE Science
December 1961 5-a-day
Every sheet in December 1961
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st December 1961State one way in which high biodiversity benefits an ecosystem.
- 2nd December 1961Explain how painting an iron gate helps prevent it from rusting.
- 3rd December 1961Why can an ionic solid not conduct electricity?
- 4th December 1961Name the salt made from zinc oxide and nitric acid.
- 5th December 1961State what is meant by a catalyst.
- 6th December 1961Name the type of biological molecule formed when amino acid monomers join together by condensation polymerisation.
- 7th December 1961Explain, in terms of gas molecules, why methane and water vapour, as well as carbon dioxide, are described as greenhouse gases.
- 8th December 1961Define specific heat capacity.
- 9th December 1961A block has a volume of 50 cm^3 and a mass of 135 g. Calculate its density.
- 10th December 1961State the number of protons and the number of neutrons in an alpha particle.
- 11th December 1961A radio wave has a wavelength of 3 m. Calculate its frequency, given that all electromagnetic waves travel at 3 x 10^8 m/s in a vacuum.
- 12th December 1961Explain why electricity is transmitted through the National Grid at a very high voltage rather than at the voltage used in homes.
- 13th December 1961A 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.
- 14th December 1961Why does a food test for sugars need a water bath?
- 15th December 1961Explain what is meant by a double blind trial.
- 16th December 1961Name the chemical released at a synapse that carries the signal across the gap.
- 17th December 1961Explain why deforestation to create land for cattle grazing can reduce biodiversity.
- 18th December 1961Name the four stages usually considered in a life cycle assessment of a product.
- 19th December 1961A student says that metals conduct electricity because they contain free-moving ions. Explain why this statement is incorrect, and give the correct explanation.
- 20th December 1961Give the formula for atom economy.
- 21st December 1961Explain, 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.
- 22nd December 1961State two products, other than water, that can be formed during the incomplete combustion of a hydrocarbon.
- 23rd December 1961State one advantage of running known reference substances alongside an unknown sample on the same chromatogram, rather than only comparing to published Rf values.
- 24th December 1961How is the uncertainty in a set of repeated readings usually estimated?
- 25th December 1961Define electric current.
- 26th December 1961A source has a half-life of 5 days and an initial activity of 1600 Bq. What is its activity after 15 days?
- 27th December 1961Explain why a larger vehicle mass increases braking distance.
- 28th December 1961State the type of force that always acts between an induced magnet and the magnet that induced it.
- 29th December 1961Name the model of the origin of the universe that is supported by red-shift observations.
- 30th December 1961Calculate the surface area to volume ratio of a cube of side 2 cm.
- 31st December 1961Which type of pathogen causes athlete's foot, a fungal skin infection?