Daily Practice · GCSE Science
August 2025 - GCSE Science 5-a-day
Every GCSE Science sheet published in August 2025, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in August 2025
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st August 2025Explain why sweating cools the body down.
- 2nd August 2025In a grassland food chain, the biomass of grass available is 8400 kg and the biomass transferred to the rabbits that eat it is 940 kg. Calculate the percentage efficiency of biomass transfer from grass to rabbits, to 3 significant figures.
- 3rd August 2025Give one reason distillation of seawater requires a large energy input.
- 4th August 2025Give the charge on an ion formed by a group 2 element.
- 5th August 2025A student reacts 2.4 g of magnesium with excess dilute hydrochloric acid: Mg + 2HCl -> MgCl2 + H2. Relative atomic mass of Mg = 24. Calculate the number of moles of hydrogen gas produced.
- 6th August 2025State one factor that affects the size of the voltage produced by a chemical cell.
- 7th August 2025Name the catalyst used when an alkene reacts with hydrogen to form an alkane.
- 8th August 2025Name the two gases released in large amounts by volcanic activity that formed most of the Earth's early atmosphere.
- 9th August 2025Name the energy store associated with a moving car.
- 10th August 2025Why is the live wire dangerous even when a device is switched off?
- 11th August 2025Describe the plum pudding model.
- 12th August 2025A force of 40 N is applied 0.25 m from a pivot. Calculate the moment.
- 13th August 2025A rectangular coil carrying a current is placed in a magnetic field, with its two long sides parallel to each other. Explain why the coil rotates rather than moving in a straight line.
- 14th August 2025Name the apparatus used to estimate the population of a slow-moving or non-moving species in a field.
- 15th August 2025State the type of large biological molecule that all enzymes are made from.
- 16th August 2025Define a communicable disease.
- 17th August 2025Define homeostasis.
- 18th August 2025Give one example of variation that is caused purely by the environment rather than by genes.
- 19th August 2025A 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.
- 20th August 2025Explain why potassium is more reactive than sodium.
- 21st August 2025Calculate the number of moles in 88 g of carbon dioxide. (Mr = 44)
- 22nd August 2025Using the values in the previous question, calculate the overall energy change for the reaction.
- 23rd August 2025In the Haber process, state the effect of removing some ammonia from the equilibrium mixture as it forms on the position of equilibrium.
- 24th August 2025A solution gives a cream precipitate when acidified with dilute nitric acid and then treated with silver nitrate solution. Name the halide ion present.
- 25th August 2025A device transfers 4500 J in 90 s. Calculate its power.
- 26th August 2025A resistor of resistance 15 ohm is connected to a 6.0 V supply. Calculate the current flowing through it. Use V = I x R.
- 27th August 2025Why does a bicycle pump get warm when used?
- 28th August 2025A runner completes a 400 m race in 52 s. Calculate her average speed, giving your answer to 3 significant figures.
- 29th August 2025Name the type of electromagnetic wave used by a television remote control.
- 30th August 2025Explain why a satellite moving in a stable circular orbit has a changing velocity even though its speed stays constant.
- 31st August 2025What happens to the DNA before mitosis begins?