Daily Practice · GCSE Science
October 2013 - GCSE Science 5-a-day
Every GCSE Science sheet published in October 2013, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in October 2013
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st October 2013Why should you write down the equation even if you cannot finish the calculation?
- 2nd October 2013State the UK mains supply frequency and typical potential difference.
- 3rd October 2013What causes the pressure of a gas on the walls of its container?
- 4th October 2013A skydiver reaches terminal velocity during free fall. Explain what is meant by 'terminal velocity'.
- 5th October 2013State the seven regions of the electromagnetic spectrum in order of increasing frequency.
- 6th October 2013State what provides the centripetal force that keeps a planet in orbit around the Sun.
- 7th October 2013Give one advantage of therapeutic cloning over using unrelated embryonic stem cells.
- 8th October 2013Why are xylem cells strengthened with lignin?
- 9th October 2013Why is glucose converted into starch for storage?
- 10th October 2013Define the term allele.
- 11th October 2013State one way in which high biodiversity benefits an ecosystem.
- 12th October 2013Explain how painting an iron gate helps prevent it from rusting.
- 13th October 2013Why can an ionic solid not conduct electricity?
- 14th October 2013Name the salt made from zinc oxide and nitric acid.
- 15th October 2013State what is meant by a catalyst.
- 16th October 2013Explain why carboxylic acids are described as 'weak acids'.
- 17th October 2013Explain, in one sentence, why the oceans were able to form only after the early Earth had cooled.
- 18th October 2013Define specific heat capacity.
- 19th October 2013A 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.
- 20th October 2013State the number of protons and the number of neutrons in an alpha particle.
- 21st October 2013Explain why ultraviolet radiation can be harmful to human skin.
- 22nd October 2013State two ways of inducing a potential difference across a conductor using a magnetic field.
- 23rd October 2013State one structure found in a bacterial cell but not in an animal cell.
- 24th October 2013Why does a food test for sugars need a water bath?
- 25th October 2013Explain what is meant by a double blind trial.
- 26th October 2013A ruler is released and falls 20 cm before being caught. Using distance = 0.5 x g x time^2 with g = 9.8 m/s^2, calculate the reaction time, to 3 significant figures.
- 27th October 2013Name the equipment used to measure the abundance of a small plant species within a sample area.
- 28th October 2013Define a finite resource, giving one example.
- 29th October 2013State one reason why simple covalent substances such as chlorine have low melting points.
- 30th October 2013Give the formula for atom economy.
- 31st October 2013Explain, 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.