Daily Practice · GCSE Science
July 2007 - GCSE Science 5-a-day
Every GCSE Science sheet published in July 2007, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in July 2007
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st July 2007Why can an ionic solid not conduct electricity?
- 2nd July 2007Name the salt made from zinc oxide and nitric acid.
- 3rd July 2007State what is meant by a catalyst.
- 4th July 2007State the functional group found in all carboxylic acids.
- 5th July 2007Name the two gases produced by photosynthesis and the substance it consumes alongside carbon dioxide.
- 6th July 2007Define specific heat capacity.
- 7th July 2007Name the change of state when a liquid becomes a gas throughout the liquid, at its boiling point.
- 8th July 2007State the number of protons and the number of neutrons in an alpha particle.
- 9th July 2007State the speed at which all electromagnetic waves travel through a vacuum.
- 10th July 2007A 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.
- 11th July 2007A student views a red blood cell at a magnification of x2000. The image of the cell measures 20 mm across. Calculate the real width of the cell, giving your answer in micrometres (um).
- 12th July 2007Why does a food test for sugars need a water bath?
- 13th July 2007Explain what is meant by a double blind trial.
- 14th July 2007Name the two parts of the central nervous system (CNS).
- 15th July 2007Name the group of organisms that break down dead plant and animal matter, returning mineral ions to the soil.
- 16th July 2007State the two main steps used to produce potable water from a fresh water source.
- 17th July 2007State the charge on a calcium ion (Group 2).
- 18th July 2007Give the formula for atom economy.
- 19th July 2007Explain, 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.
- 20th July 2007Hexadecane (C16H34) is cracked to produce dodecane (C12H26) and one other product. Calculate the molecular formula of the other product.
- 21st July 2007State one advantage of running known reference substances alongside an unknown sample on the same chromatogram, rather than only comparing to published Rf values.
- 22nd July 2007How is the uncertainty in a set of repeated readings usually estimated?
- 23rd July 2007Define electric current.
- 24th July 2007A source has a half-life of 5 days and an initial activity of 1600 Bq. What is its activity after 15 days?
- 25th July 2007A resultant force of 60 N acts on a wheelbarrow of mass 15 kg. Calculate its acceleration.
- 26th July 2007State the difference between a permanent magnet and an induced magnet.
- 27th July 2007State whether a galaxy moving towards Earth would show a red-shift or a blue-shift in its light.
- 28th July 2007Calculate the surface area to volume ratio of a cube of side 2 cm.
- 29th July 2007Name the vector that spreads the protist pathogen that causes malaria.
- 30th July 2007State two things excess glucose can be converted into for storage in the human body.
- 31st July 2007Define homozygous.