Daily Practice · GCSE Science
January 2014 - GCSE Science 5-a-day
Every GCSE Science sheet published in January 2014, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in January 2014
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st January 2014A peat bog covered an area of 850 hectares in 2015. By 2025, drainage for farmland had reduced the peat bog to 680 hectares. Calculate the percentage decrease in the area of the peat bog.
- 2nd January 2014Explain why steel (an alloy of iron and carbon) is generally harder than pure iron.
- 3rd January 2014Why do polymers have higher melting points than small molecules such as methane?
- 4th January 2014Complete: acid + metal carbonate gives ...
- 5th January 2014State the four factors that can increase the rate of a chemical reaction.
- 6th January 2014Name the type of biological molecule formed when amino acid monomers join together by condensation polymerisation.
- 7th January 2014Describe, in terms of wavelength, the difference between the radiation the Earth receives from the Sun and the radiation it re-emits from its surface.
- 8th January 2014By what factor does kinetic energy increase if speed is doubled?
- 9th January 2014State what happens to the internal energy of a substance as it is heated, in terms of the kinetic and potential energy of its particles.
- 10th January 2014Define the term 'half-life' of a radioactive isotope.
- 11th January 2014A 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 January 2014Explain why electricity is transmitted through the National Grid at a very high voltage rather than at the voltage used in homes.
- 13th January 2014A microscope has a x10 eyepiece lens and a x20 objective lens. Calculate the total magnification.
- 14th January 2014Describe the positive result of the Biuret test.
- 15th January 2014What is tested during preclinical testing?
- 16th January 2014Name the chemical released at a synapse that carries the signal across the gap.
- 17th January 2014Explain why deforestation to create land for cattle grazing can reduce biodiversity.
- 18th January 2014Explain why potable water is not the same as pure water.
- 19th January 2014Explain why sodium chloride conducts electricity when molten but not when solid.
- 20th January 2014Why do companies prefer reactions with a high atom economy?
- 21st January 2014On a reaction profile diagram, the reactants are drawn at a higher energy level than the products. State whether the reaction is exothermic or endothermic.
- 22nd January 2014State two products, other than water, that can be formed during the incomplete combustion of a hydrocarbon.
- 23rd January 2014Explain why the solvent level in the container must be below the pencil baseline.
- 24th January 2014In the specific heat capacity practical, why is the block insulated?
- 25th January 2014Describe the current-potential difference graph for a filament lamp.
- 26th January 2014State the difference between irradiation and contamination.
- 27th January 2014Explain why a larger vehicle mass increases braking distance.
- 28th January 2014State the type of force that always acts between an induced magnet and the magnet that induced it.
- 29th January 2014Name the model of the origin of the universe that is supported by red-shift observations.
- 30th January 2014Name the process that moves substances against a concentration gradient.
- 31st January 2014Explain 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.