Daily Practice · GCSE Science
January 2009 - GCSE Science 5-a-day
Every GCSE Science sheet published in January 2009, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in January 2009
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st January 2009State two ways of increasing the force produced by a motor effect setup, for a wire of fixed length at a fixed angle to the field.
- 2nd January 2009In the microbiology practical, why are agar plates incubated at 25 degrees Celsius in schools rather than at 37 degrees Celsius?
- 3rd January 2009Name the organ system responsible for breaking food down into small, soluble molecules.
- 4th January 2009Why can HIV not be treated with antibiotics?
- 5th January 2009Name the hormone released when blood glucose concentration is too high, and state its overall effect.
- 6th January 2009Define mutation.
- 7th January 2009An atom has atomic number 9 and mass number 19. Calculate the number of neutrons.
- 8th January 2009State the trend in reactivity down group 7 and name the most reactive halogen listed on the periodic table.
- 9th January 2009Define the limiting reactant.
- 10th January 2009Give one everyday example of an endothermic process.
- 11th January 2009The forward reaction of a particular reversible reaction is exothermic. State whether the reverse reaction is exothermic or endothermic.
- 12th January 2009Explain how the sodium hydroxide test distinguishes aluminium ions from calcium ions, given that both give a white precipitate.
- 13th January 2009Why should you write down the equation even if you cannot finish the calculation?
- 14th January 2009A current of 2.0 A flows through a resistor for 30 s. Calculate the charge that flows. Use Q = I x t.
- 15th January 2009What causes the pressure of a gas on the walls of its container?
- 16th January 2009State what the gradient of a distance-time graph represents.
- 17th January 2009Explain why ultraviolet, X-rays and gamma rays can be hazardous to human health, but radio waves are not.
- 18th January 2009Explain, in terms of forces, why a satellite in a stable orbit does not fall towards the Earth or fly off into space.
- 19th January 2009Give one advantage of therapeutic cloning over using unrelated embryonic stem cells.
- 20th January 2009Why are xylem cells strengthened with lignin?
- 21st January 2009Why is glucose converted into starch for storage?
- 22nd January 2009In pea plants, the allele for tall stems (T) is dominant over the allele for short stems (t). A homozygous tall plant (TT) is crossed with a homozygous short plant (tt). State the genotype and phenotype of all the offspring.
- 23rd January 2009State one way in which high biodiversity benefits an ecosystem.
- 24th January 2009Explain how painting an iron gate helps prevent it from rusting.
- 25th January 2009Why can an ionic solid not conduct electricity?
- 26th January 2009Name the salt made from zinc oxide and nitric acid.
- 27th January 2009State what is meant by a catalyst.
- 28th January 2009State what happens to the carbon-to-carbon double bond of an alkene monomer during addition polymerisation.
- 29th January 2009Explain, in terms of gas molecules, why methane and water vapour, as well as carbon dioxide, are described as greenhouse gases.
- 30th January 2009Define specific heat capacity.
- 31st January 2009A block has a volume of 50 cm^3 and a mass of 135 g. Calculate its density.