Daily Practice · GCSE Science
July 2013 - GCSE Science 5-a-day
Every GCSE Science sheet published in July 2013, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in July 2013
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st July 2013State the type of large biological molecule that all enzymes are made from.
- 2nd July 2013Describe the symptoms of rose black spot and its effect on the plant.
- 3rd July 2013State one difference between nervous and hormonal coordination.
- 4th July 2013State what is meant by a selection pressure.
- 5th July 2013A sample contains 90% of an isotope with mass number 10 and 10% of an isotope with mass number 11. Calculate the relative atomic mass, to 1 decimal place.
- 6th July 2013Why did Mendeleev leave gaps in his table?
- 7th July 2013Calculate the mass of 0.25 mol of sodium hydroxide, NaOH. (Na = 23, O = 16, H = 1)
- 8th July 2013Using the values in the previous question, calculate the overall energy change for the reaction.
- 9th July 2013State Le Chatelier's principle in your own words.
- 10th July 2013State the flame test colour for sodium ions.
- 11th July 2013Calculate the gravitational potential energy gained by a 60 kg person climbing 5 m. (g = 9.8 N/kg)
- 12th July 2013A resistor of resistance 15 ohm is connected to a 6.0 V supply. Calculate the current flowing through it. Use V = I x R.
- 13th July 2013A gas at 200 kPa occupies 3.0 cubic metres. It is compressed to 1.5 cubic metres at constant temperature. Calculate the new pressure.
- 14th July 2013On a velocity-time graph, what does the area between the line and the time axis represent?
- 15th July 2013State the speed of all electromagnetic waves travelling through a vacuum.
- 16th July 2013State the name of the force that keeps a satellite in orbit around the Earth.
- 17th July 2013State three functions of mitosis.
- 18th July 2013What happens to guard cells when a plant is short of water?
- 19th July 2013Write the word equation for photosynthesis.
- 20th July 2013A plant grown in the shade is shorter than a genetically identical plant of the same species grown in full sunlight. State whether this difference is genetic variation, environmental variation, or both.
- 21st July 2013State one method used to try to maintain biodiversity.
- 22nd July 2013Explain, using the reactivity series, why attaching blocks of zinc to the hull of a steel ship helps prevent the steel from rusting.
- 23rd July 2013Why is graphite soft and slippery?
- 24th July 2013Explain the difference between a strong acid and a concentrated acid.
- 25th July 2013A reaction between calcium carbonate and hydrochloric acid produces 72 cm3 of carbon dioxide gas in 30 seconds. Calculate the mean rate of reaction.
- 26th July 2013Name the small molecule typically released as a by-product during condensation polymerisation.
- 27th July 2013State two long-term stores of carbon that removed carbon dioxide from the early atmosphere.
- 28th July 2013Name four energy stores.
- 29th July 2013Calculate the energy needed to melt 0.50 kg of a substance with a specific latent heat of fusion of 210000 J/kg.
- 30th July 2013State one source of natural background radiation and one source of artificial (man-made) background radiation.
- 31st July 2013A water wave has a frequency of 4 Hz and a wavelength of 0.5 m. Calculate its speed.