Daily Practice · GCSE Science
April 2023 - GCSE Science 5-a-day
Every GCSE Science sheet published in April 2023, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in April 2023
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st April 2023Put these into the correct order for a reflex arc: motor neuron, receptor, effector, relay neuron, sensory neuron.
- 2nd April 2023State one structural adaptation of a polar bear that helps it survive in a cold environment.
- 3rd April 2023Define a finite resource, giving one example.
- 4th April 2023State one reason why simple covalent substances such as chlorine have low melting points.
- 5th April 2023Give the formula for atom economy.
- 6th April 2023Explain, 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.
- 7th April 2023Name the process used to separate crude oil into fractions.
- 8th April 2023State one advantage of running known reference substances alongside an unknown sample on the same chromatogram, rather than only comparing to published Rf values.
- 9th April 2023How is the uncertainty in a set of repeated readings usually estimated?
- 10th April 2023Define electric current.
- 11th April 2023A source has a half-life of 5 days and an initial activity of 1600 Bq. What is its activity after 15 days?
- 12th April 2023State Newton's First Law of Motion.
- 13th April 2023Two bar magnets are placed with their north poles facing each other. State what happens to the magnets.
- 14th April 2023State what is meant by red-shift.
- 15th April 2023Calculate the surface area to volume ratio of a cube of side 2 cm.
- 16th April 2023A student measures the mean diameter of a zone of inhibition as 12 mm. Calculate its radius.
- 17th April 2023Explain why breathing rate and breathing depth both increase during exercise.
- 18th April 2023In pea plants, purple flower colour (allele H) is dominant over white flower colour (allele h). State the phenotype of a plant with genotype Hh.
- 19th April 2023Give the resolution of a burette that can be read to the nearest half of a small division.
- 20th April 2023Why is an atom electrically neutral?
- 21st April 2023State the law of conservation of mass.
- 22nd April 2023State the two materials commonly used as inert electrodes in electrolysis, and explain why they must be inert.
- 23rd April 2023Explain how a catalyst increases the rate of a reaction without being used up.
- 24th April 2023Give one piece of evidence that a solid sample is impure, based on its melting behaviour.
- 25th April 2023Explain why carbon monoxide is dangerous even though it has no smell.
- 26th April 2023Why can no device be 100 percent efficient?
- 27th April 2023Why is melting described as a physical change?
- 28th April 2023A resultant force of 45 N acts on an object of mass 9.0 kg. Calculate its acceleration. Use F = m x a.
- 29th April 2023Give one everyday example of a transverse wave and one everyday example of a longitudinal wave.
- 30th April 2023State what happens to the orbital speed needed for a stable orbit as the orbital radius increases.