Daily Practice · GCSE Science
February 2009 - GCSE Science 5-a-day
Every GCSE Science sheet published in February 2009, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in February 2009
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st February 2009State the number of protons and the number of neutrons in an alpha particle.
- 2nd February 2009Name the type of electromagnetic wave used to sterilise medical equipment.
- 3rd February 2009A transformer has a primary current of 2.0 A and a primary voltage of 230 V. The secondary voltage is 460 V. Assuming the transformer is 100 percent efficient, calculate the secondary current.
- 4th February 2009A cube-shaped model cell has sides of length 3 cm. Calculate the surface area to volume ratio of the cube. Give your answer in the form n : 1.
- 5th February 2009Why does a food test for sugars need a water bath?
- 6th February 2009Explain what is meant by a double blind trial.
- 7th February 2009Explain why reflex responses are faster than voluntary responses.
- 8th February 2009Define community, in ecological terms.
- 9th February 2009Name the four stages usually considered in a life cycle assessment of a product.
- 10th February 2009A student says that metals conduct electricity because they contain free-moving ions. Explain why this statement is incorrect, and give the correct explanation.
- 11th February 2009Give the formula for atom economy.
- 12th February 2009Explain, in terms of the reaction pathway, why adding a catalyst increases the rate of a reaction without changing the overall energy change of the reaction.
- 13th February 2009Name the two industrial methods of cracking.
- 14th February 2009State one advantage of running known reference substances alongside an unknown sample on the same chromatogram, rather than only comparing to published Rf values.
- 15th February 2009How is the uncertainty in a set of repeated readings usually estimated?
- 16th February 2009Define electric current.
- 17th February 2009A source has a half-life of 5 days and an initial activity of 1600 Bq. What is its activity after 15 days?
- 18th February 2009Explain, using Newton's Third Law, why a swimmer is able to push themselves forward by pushing backward against the water.
- 19th February 2009State what happens to the magnetic field around a straight current-carrying wire if the direction of the current is reversed.
- 20th February 2009State what red-shift shows about the motion of most distant galaxies.
- 21st February 2009Calculate the surface area to volume ratio of a cube of side 2 cm.
- 22nd February 2009Which type of pathogen causes athlete's foot, a fungal skin infection?
- 23rd February 2009State the word equation for aerobic respiration.
- 24th February 2009State one ethical concern raised by embryo screening.
- 25th February 2009Give the resolution of a burette that can be read to the nearest half of a small division.
- 26th February 2009Why is an atom electrically neutral?
- 27th February 2009State the law of conservation of mass.
- 28th February 2009State the name given to the negative electrode in electrolysis.