Daily Practice · GCSE Science
June 2005 - GCSE Science 5-a-day
Every GCSE Science sheet published in June 2005, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in June 2005
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st June 2005State the type of large biological molecule that all enzymes are made from.
- 2nd June 2005Give one way of reducing the spread of malaria.
- 3rd June 2005Name the hormone released when blood glucose concentration is too high, and state its overall effect.
- 4th June 2005Define mutation.
- 5th June 2005A sample contains 90% of an isotope with mass number 10 and 10% of an isotope with mass number 11. Calculate the relative atomic mass, to 1 decimal place.
- 6th June 2005Why do elements in the same group have similar chemical properties?
- 7th June 2005Why is the amount of product directly proportional to the amount of limiting reactant?
- 8th June 2005Using the values in the previous question, calculate the overall energy change for the reaction.
- 9th June 2005The forward reaction of a particular reversible reaction is exothermic. State whether the reverse reaction is exothermic or endothermic.
- 10th June 2005A solution forms a green precipitate with sodium hydroxide solution. Which ion is present?
- 11th June 2005Give the equation for wave speed and its units.
- 12th June 2005A resistor of resistance 15 ohm is connected to a 6.0 V supply. Calculate the current flowing through it. Use V = I x R.
- 13th June 2005Why does reducing the volume of a gas increase the pressure even though the molecules do not speed up?
- 14th June 2005State what the gradient of a distance-time graph represents.
- 15th June 2005Explain why ultraviolet, X-rays and gamma rays can be hazardous to human health, but radio waves are not.
- 16th June 2005Explain, in terms of forces, why a satellite in a stable orbit does not fall towards the Earth or fly off into space.
- 17th June 2005Give one risk of stem cell treatment.
- 18th June 2005Why does a potometer measure water uptake rather than transpiration directly?
- 19th June 2005Why does the rate of photosynthesis fall at very high temperatures?
- 20th June 2005In 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.
- 21st June 2005Explain why large-scale deforestation increases the concentration of carbon dioxide in the atmosphere.
- 22nd June 2005State the four stages considered in a life cycle assessment.
- 23rd June 2005Why does simple molecular carbon dioxide have a much lower melting point than giant covalent silicon dioxide?
- 24th June 2005Define oxidation in terms of electrons.
- 25th June 2005State two units that the rate of a reaction can be measured in.
- 26th June 2005State what happens to the carbon-to-carbon double bond of an alkene monomer during addition polymerisation.
- 27th June 2005State two long-term stores of carbon that removed carbon dioxide from the early atmosphere.
- 28th June 2005A 3 kg object is raised 2 m. Calculate the gravitational potential energy gained. (g = 9.8 N/kg)
- 29th June 2005Calculate the energy needed to melt 0.50 kg of a substance with a specific latent heat of fusion of 210000 J/kg.
- 30th June 2005A GM tube detects a count rate of 240 counts per minute from a source. After 15 days the count rate has fallen to 30 counts per minute. Show that this data is consistent with a half-life of 5 days.