Daily Practice · GCSE Science
September 2021 - GCSE Science 5-a-day
Every GCSE Science sheet published in September 2021, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in September 2021
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st September 2021Name the structure in a plant cell that controls the substances entering and leaving the cell.
- 2nd September 2021Why does a food test for sugars need a water bath?
- 3rd September 2021Explain what is meant by a double blind trial.
- 4th September 2021Explain why reflex responses are faster than voluntary responses.
- 5th September 2021Define community, in ecological terms.
- 6th September 2021Name two methods of desalinating seawater.
- 7th September 2021Name the giant covalent structure made of carbon in which each carbon atom is bonded to four others.
- 8th September 2021Give the formula for atom economy.
- 9th September 2021Explain, 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.
- 10th September 2021Name the two industrial methods of cracking.
- 11th September 2021State one advantage of running known reference substances alongside an unknown sample on the same chromatogram, rather than only comparing to published Rf values.
- 12th September 2021How is the uncertainty in a set of repeated readings usually estimated?
- 13th September 2021Define electric current.
- 14th September 2021A source has a half-life of 5 days and an initial activity of 1600 Bq. What is its activity after 15 days?
- 15th September 2021Explain, using Newton's Third Law, why a swimmer is able to push themselves forward by pushing backward against the water.
- 16th September 2021State what happens to the magnetic field around a straight current-carrying wire if the direction of the current is reversed.
- 17th September 2021State what red-shift shows about the motion of most distant galaxies.
- 18th September 2021Calculate the surface area to volume ratio of a cube of side 2 cm.
- 19th September 2021Describe how phagocytes destroy pathogens in the body.
- 20th September 2021State the word equation for aerobic respiration.
- 21st September 2021State one ethical concern raised by embryo screening.
- 22nd September 2021Give the resolution of a burette that can be read to the nearest half of a small division.
- 23rd September 2021Why is an atom electrically neutral?
- 24th September 2021State the law of conservation of mass.
- 25th September 2021State the name given to the negative electrode in electrolysis.
- 26th September 2021Explain why using a light sensor and data logger is more reliable than timing by eye in the disappearing cross practical.
- 27th September 2021Give one piece of evidence that a solid sample is impure, based on its melting behaviour.
- 28th September 2021Explain why carbon monoxide is dangerous even though it has no smell.
- 29th September 2021Why can no device be 100 percent efficient?
- 30th September 2021Why is melting described as a physical change?