Daily Practice · GCSE Science
August 1999 - GCSE Science 5-a-day
Every GCSE Science sheet published in August 1999, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in August 1999
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st August 1999Why can HIV not be treated with antibiotics?
- 2nd August 1999Explain, in terms of blood vessels, how the skin helps to cool the body when it is too hot.
- 3rd August 1999Define speciation.
- 4th August 1999An atom has atomic number 9 and mass number 19. Calculate the number of neutrons.
- 5th August 1999State the trend in reactivity down group 7 and name the most reactive halogen listed on the periodic table.
- 6th August 1999Define the limiting reactant.
- 7th August 1999Give one everyday example of an endothermic process.
- 8th August 1999State the catalyst commonly used in the Haber process.
- 9th August 1999Explain how the sodium hydroxide test distinguishes aluminium ions from calcium ions, given that both give a white precipitate.
- 10th August 1999Why should you write down the equation even if you cannot finish the calculation?
- 11th August 1999A current of 2.0 A flows through a resistor for 30 s. Calculate the charge that flows. Use Q = I x t.
- 12th August 1999What causes the pressure of a gas on the walls of its container?
- 13th August 1999Define the term 'vector quantity' and give one example.
- 14th August 1999Name the type of electromagnetic wave used to treat cancer by killing cells in a tumour, and state which part of the atom emits it.
- 15th August 1999State one difference between a moon and an artificial satellite.
- 16th August 1999Give one advantage of therapeutic cloning over using unrelated embryonic stem cells.
- 17th August 1999Why are xylem cells strengthened with lignin?
- 18th August 1999Why is glucose converted into starch for storage?
- 19th August 1999Define phenotype.
- 20th August 1999State one way in which high biodiversity benefits an ecosystem.
- 21st August 1999Explain how painting an iron gate helps prevent it from rusting.
- 22nd August 1999Why can an ionic solid not conduct electricity?
- 23rd August 1999Name the salt made from zinc oxide and nitric acid.
- 24th August 1999State what is meant by a catalyst.
- 25th August 1999Name the type of biological molecule formed when amino acid monomers join together by condensation polymerisation.
- 26th August 1999Explain, in terms of gas molecules, why methane and water vapour, as well as carbon dioxide, are described as greenhouse gases.
- 27th August 1999Define specific heat capacity.
- 28th August 1999A block has a volume of 50 cm^3 and a mass of 135 g. Calculate its density.
- 29th August 1999State the number of protons and the number of neutrons in an alpha particle.
- 30th August 1999A 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.
- 31st August 1999Explain why electricity is transmitted through the National Grid at a very high voltage rather than at the voltage used in homes.