Daily Practice · GCSE Science
October 2021 - GCSE Science 5-a-day
Every GCSE Science sheet published in October 2021, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in October 2021
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st October 2021Calculate the weight of an object of mass 8.0 kg on Earth, where g = 9.8 N/kg.
- 2nd October 2021Explain, in terms of particle motion, why a wave can transfer energy without transferring matter.
- 3rd October 2021Name the region of the Solar System where most asteroids are found.
- 4th October 2021Convert 0.05 mm into micrometres.
- 5th October 2021State the function of the valves in the heart and in veins.
- 6th October 2021Name the gas that is released as a product of photosynthesis.
- 7th October 2021A person's blood glucose concentration is 4.8 mmol/dm^3 before breakfast and 7.2 mmol/dm^3 after breakfast. Calculate the increase in blood glucose concentration.
- 8th October 2021The Arctic fox has small, rounded ears compared with the desert fennec fox, which has very large ears. State whether this is a structural, behavioural or functional adaptation, and explain how it helps the Arctic fox survive.
- 9th October 2021Explain why potable water is not required to be chemically pure.
- 10th October 2021Write the formula of calcium chloride and explain the ratio.
- 11th October 2021State the name given to a reaction in which a substance loses electrons.
- 12th October 2021Hydrogen reacts with chlorine to form hydrogen chloride: H2 + Cl2 -> 2HCl. Use the bond energies given to calculate the overall energy change for this reaction. Bond energies: H-H = 436 kJ/mol, Cl-Cl = 243 kJ/mol, H-Cl = 432 kJ/mol.
- 13th October 2021Propene (C3H6) reacts with steam in the presence of a catalyst. Name the catalyst, and name the type of compound formed.
- 14th October 2021Give two processes that removed carbon dioxide from the early atmosphere.
- 15th October 2021Calculate the kinetic energy of a 2.0 kg trolley moving at 4.0 m/s.
- 16th October 2021Give the equation linking energy transferred, charge flow and potential difference.
- 17th October 2021Who provided the evidence for the existence of the neutron, and roughly when relative to the nuclear model?
- 18th October 2021State two factors, other than depth, that affect the pressure at a given point in a liquid.
- 19th October 2021State the name of the rule used to find the direction of the force on a current-carrying wire in a magnetic field, and name the three quantities it relates.
- 20th October 2021Why does taking repeat readings and calculating a mean improve the data?
- 21st October 2021Explain why the rate of an enzyme-controlled reaction decreases sharply above the enzyme's optimum temperature.
- 22nd October 2021State two ways measles is prevented from spreading.
- 23rd October 2021State what is meant by negative feedback.
- 24th October 2021Name the scientist who proposed the three-domain system of classification, and name the three domains.
- 25th October 2021Write the electronic structure of an atom with 12 electrons.
- 26th October 2021Give two observations when lithium is added to water.
- 27th October 2021State the value of the Avogadro constant and what it counts.
- 28th October 2021A reaction profile shows the reactants at 220 kJ and the products at 340 kJ. State whether the reaction is exothermic or endothermic.
- 29th October 2021State the effect of increasing the temperature on the position of equilibrium of a reaction whose forward reaction is exothermic.
- 30th October 2021Write the ionic equation for the precipitation reaction between barium ions and sulfate ions.
- 31st October 2021Write the equation linking power, energy and time, and rearrange it for time.