Daily Practice · GCSE Science
October 2009 - GCSE Science 5-a-day
Every GCSE Science sheet published in October 2009, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in October 2009
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st October 2009Name the two methods used to produce ethanol industrially.
- 2nd October 2009Explain, in one sentence, why the oceans were able to form only after the early Earth had cooled.
- 3rd October 2009What happens to the energy described as 'wasted' in a transfer?
- 4th October 2009A 1.5 kg block of iron is heated from 18 degrees C to 98 degrees C. The specific heat capacity of iron is 450 J/(kg degrees C). Calculate the change in thermal energy.
- 5th October 2009Explain the difference between irradiation and contamination.
- 6th October 2009State whether sound waves are transverse or longitudinal.
- 7th October 2009State the name of the component at the centre of a transformer's primary and secondary coils, and state its purpose.
- 8th October 2009State one structure found in a bacterial cell but not in an animal cell.
- 9th October 2009Name the products of protein digestion.
- 10th October 2009State the difference between an antibiotic and a painkiller.
- 11th October 2009State why a reflex action is described as involuntary.
- 12th October 2009A student counts 3, 5, 4 and 8 dandelion plants in four separate 1 m^2 quadrats. Calculate the mean number of dandelions per quadrat.
- 13th October 2009Define a finite resource, giving one example.
- 14th October 2009State one reason why simple covalent substances such as chlorine have low melting points.
- 15th October 2009Convert 250 cubic centimetres into cubic decimetres.
- 16th October 2009A student heats solid copper carbonate strongly in a test tube, and it breaks down into copper oxide and carbon dioxide. Heating must be continued throughout the reaction for it to keep going. State whether this thermal decomposition reaction is exothermic or endothermic, and explain your reasoning.
- 17th October 2009State what happens to the boiling point of hydrocarbons as their chain length increases.
- 18th October 2009Write the formula for calculating an Rf value.
- 19th October 2009Readings have a mean of 20.0 cm and a range of 1.0 cm. Calculate the percentage uncertainty.
- 20th October 2009What happens to the total resistance when a second resistor is added in parallel, and why?
- 21st October 2009What happens inside the nucleus when a beta particle is emitted?
- 22nd October 2009A skateboarder of mass 55 kg moving at 4 m/s collides with and grabs onto a stationary shopping trolley of mass 20 kg, and they move off together. Calculate their combined velocity immediately after the collision.
- 23rd October 2009Describe the shape of the magnetic field produced around a long straight wire carrying a current.
- 24th October 2009State how the amount of red-shift is related to a galaxy's distance from Earth.
- 25th October 2009State three factors that increase the rate of diffusion.
- 26th October 2009A student measures the mean diameter of a zone of inhibition as 12 mm. Calculate its radius.
- 27th October 2009State the word equation for anaerobic respiration in human muscle cells.
- 28th October 2009State whether cystic fibrosis is caused by a dominant or a recessive allele.
- 29th October 2009What does 'concordant' mean when applied to titres?
- 30th October 2009What did the alpha scattering experiment show that the plum pudding model could not explain?
- 31st October 2009Magnesium is burned in an open crucible and the mass increases. Explain why.