Daily Practice · GCSE Science
February 2007 - GCSE Science 5-a-day
Every GCSE Science sheet published in February 2007, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in February 2007
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st February 2007State one structural adaptation of a polar bear that helps it survive in a cold environment.
- 2nd February 2007Define a finite resource, giving one example.
- 3rd February 2007State one reason why simple covalent substances such as chlorine have low melting points.
- 4th February 2007State two reasons why a percentage yield is less than 100 percent.
- 5th February 2007State what is meant by the activation energy of a reaction.
- 6th February 2007Name the process used to separate crude oil into fractions.
- 7th February 2007Explain why the baseline is drawn in pencil rather than ink.
- 8th February 2007Give one reason for taking the gradient from the line of best fit rather than from two data points.
- 9th February 2007State the equation linking potential difference, current and resistance.
- 10th February 2007Define half-life.
- 11th February 2007State Newton's First Law of Motion.
- 12th February 2007Two bar magnets are placed with their north poles facing each other. State what happens to the magnets.
- 13th February 2007State what is meant by red-shift.
- 14th February 2007Define osmosis.
- 15th February 2007A student measures the mean diameter of a zone of inhibition as 12 mm. Calculate its radius.
- 16th February 2007Explain why breathing rate and breathing depth both increase during exercise.
- 17th February 2007In pea plants, purple flower colour (allele H) is dominant over white flower colour (allele h). State the phenotype of a plant with genotype Hh.
- 18th February 2007A gas syringe collects 48 cubic centimetres of gas in 40 seconds. Calculate the mean rate.
- 19th February 2007Why do isotopes of an element react in the same way?
- 20th February 2007Calculate the Mr of calcium carbonate, CaCO3. (Ca = 40, C = 12, O = 16)
- 21st February 2007State the two materials commonly used as inert electrodes in electrolysis, and explain why they must be inert.
- 22nd February 2007Explain how a catalyst increases the rate of a reaction without being used up.
- 23rd February 2007State the reagent added, and the result, that shows a white solid contains sulfate ions.
- 24th February 2007State the two products of the complete combustion of a hydrocarbon fuel.
- 25th February 2007State one way to increase the efficiency of a motor.
- 26th February 2007Why is the density of a gas much lower than that of the same substance as a liquid?
- 27th February 2007A resultant force of 45 N acts on an object of mass 9.0 kg. Calculate its acceleration. Use F = m x a.
- 28th February 2007Give one everyday example of a transverse wave and one everyday example of a longitudinal wave.