Daily Practice · GCSE Science
September 1997 - GCSE Science 5-a-day
Every sheet in September 1997
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st September 1997State what is meant by the activation energy of a reaction.
- 2nd September 1997Define the term 'hydrocarbon'.
- 3rd September 1997Explain why the baseline is drawn in pencil rather than ink.
- 4th September 1997Give one reason for taking the gradient from the line of best fit rather than from two data points.
- 5th September 1997State the equation linking potential difference, current and resistance.
- 6th September 1997Define half-life.
- 7th September 1997A shopping trolley has a mass of 25 kg. Calculate its weight, taking g = 9.8 N/kg.
- 8th September 1997A student wraps a coil of insulated wire around an iron nail and connects it to a battery. Name the device this creates, and state one way to increase its magnetic field strength.
- 9th September 1997Explain why red-shift observations support the idea that the universe is expanding, rather than Earth simply being at the centre of the universe with everything moving away from it.
- 10th September 1997Define osmosis.
- 11th September 1997A student measures the mean diameter of a zone of inhibition as 12 mm. Calculate its radius.
- 12th September 1997Explain, in terms of respiration, why a build-up of lactic acid causes muscle fatigue during vigorous exercise.
- 13th September 1997A man has genotype XY. State his sex, and state which sex chromosomes are found in the sperm cells he produces.
- 14th September 1997A gas syringe collects 48 cubic centimetres of gas in 40 seconds. Calculate the mean rate.
- 15th September 1997Why do isotopes of an element react in the same way?
- 16th September 1997Calculate the Mr of calcium carbonate, CaCO3. (Ca = 40, C = 12, O = 16)
- 17th September 1997In the industrial extraction of aluminium, explain why the aluminium oxide is dissolved in molten cryolite rather than melted on its own.
- 18th September 1997Explain why increasing the surface area of a solid reactant increases the rate of a reaction.
- 19th September 1997State the reagent added, and the result, that shows a white solid contains sulfate ions.
- 20th September 1997State the two products of the complete combustion of a hydrocarbon fuel.
- 21st September 1997State one way to increase the efficiency of a motor.
- 22nd September 1997Why is the density of a gas much lower than that of the same substance as a liquid?
- 23rd September 1997A resultant force of 45 N acts on an object of mass 9.0 kg. Calculate its acceleration. Use F = m x a.
- 24th September 1997A wave has a frequency of 50 Hz. Calculate its period.
- 25th September 1997Explain, in terms of forces, why an orbiting satellite does not travel off in a straight line.
- 26th September 1997Name two structures found in a plant cell but not in an animal cell.
- 27th September 1997Why is the wall of the left ventricle thicker than that of the right ventricle?
- 28th September 1997State three factors that can limit the rate of photosynthesis.
- 29th September 1997State one risk factor linked to type 2 diabetes.
- 30th September 1997State one abiotic factor that can affect the population of fish living in a pond.