Daily Practice · GCSE Science
October 2005 - GCSE Science 5-a-day
Every GCSE Science sheet published in October 2005, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in October 2005
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st October 2005A student reacts excess zinc powder with 25 cm3 of copper sulfate solution in a polystyrene cup. The starting temperature is 21.0 degrees C and the maximum temperature reached is 58.5 degrees C. Calculate the temperature change.
- 2nd October 2005Hexadecane (C16H34) is cracked to produce dodecane (C12H26) and one other product. Calculate the molecular formula of the other product.
- 3rd October 2005State two advantages of instrumental methods of analysis, such as GC-MS, compared with manual chemical tests.
- 4th October 2005Distinguish repeatability from reproducibility.
- 5th October 2005How does the resistance of a thermistor change as it gets hotter?
- 6th October 2005What is an alpha particle made of?
- 7th October 2005A resultant force of 60 N acts on a wheelbarrow of mass 15 kg. Calculate its acceleration.
- 8th October 2005State the difference between a permanent magnet and an induced magnet.
- 9th October 2005State whether a galaxy moving towards Earth would show a red-shift or a blue-shift in its light.
- 10th October 2005Explain why a plant cell placed in pure water does not burst.
- 11th October 2005A student measures the mean diameter of a zone of inhibition as 12 mm. Calculate its radius.
- 12th October 2005State two things excess glucose can be converted into for storage in the human body.
- 13th October 2005Define homozygous.
- 14th October 2005In the rate experiment where a cross disappears, why is the result subjective?
- 15th October 2005An atom has an atomic number of 17 and a mass number of 37. How many neutrons does it have?
- 16th October 2005Calculate the number of moles in 20 g of calcium carbonate. (Mr = 100)
- 17th October 2005Molten zinc chloride, ZnCl2, is electrolysed using inert electrodes. Write the half equation for the reaction at (a) the cathode, and (b) the anode.
- 18th October 2005A tangent drawn to a volume-time graph at 15 seconds passes through the points (5 s, 6 cm3) and (25 s, 66 cm3). Calculate the rate of reaction at 15 seconds.
- 19th October 2005A solid gives a lilac flame test. Name the metal ion present.
- 20th October 2005Name the two additional products that can form during the incomplete combustion of a hydrocarbon fuel.
- 21st October 2005Give the equation for efficiency in terms of energy.
- 22nd October 2005Calculate the mass of 0.5 cubic metres of a material of density 2400 kilograms per cubic metre.
- 23rd October 2005A resultant force of 45 N acts on an object of mass 9.0 kg. Calculate its acceleration. Use F = m x a.
- 24th October 2005State the difference between a transverse wave and a longitudinal wave.
- 25th October 2005Name the force that keeps the planets in orbit around the Sun.
- 26th October 2005State the function of the mitochondria.
- 27th October 2005Which component of blood transports carbon dioxide, urea and hormones?
- 28th October 2005State three factors that can limit the rate of photosynthesis.
- 29th October 2005Explain why sweating cools the body down.
- 30th October 2005A student places ten 1 m x 1 m quadrats at random across a school field of area 3000 m2 and counts a total of 45 dandelions across all ten quadrats. Estimate the total number of dandelions on the field.
- 31st October 2005Explain, in terms of particle size, how reverse osmosis separates water from dissolved salt.