Daily Practice · GCSE Science
August 2021 - GCSE Science 5-a-day
Every GCSE Science sheet published in August 2021, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in August 2021
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st August 2021Why can HIV not be treated with antibiotics?
- 2nd August 2021Name the hormone released when blood glucose concentration is too high, and state its overall effect.
- 3rd August 2021Define mutation.
- 4th August 2021A 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.
- 5th August 2021State the trend in reactivity down group 7 and name the most reactive halogen listed on the periodic table.
- 6th August 2021Define the limiting reactant.
- 7th August 2021Using the values in the previous question, calculate the overall energy change for the reaction.
- 8th August 2021The forward reaction of a particular reversible reaction is exothermic. State whether the reverse reaction is exothermic or endothermic.
- 9th August 2021Explain how the sodium hydroxide test distinguishes aluminium ions from calcium ions, given that both give a white precipitate.
- 10th August 2021Why should you write down the equation even if you cannot finish the calculation?
- 11th August 2021A resistor of resistance 15 ohm is connected to a 6.0 V supply. Calculate the current flowing through it. Use V = I x R.
- 12th August 2021What causes the pressure of a gas on the walls of its container?
- 13th August 2021State what the gradient of a distance-time graph represents.
- 14th August 2021Explain why ultraviolet, X-rays and gamma rays can be hazardous to human health, but radio waves are not.
- 15th August 2021Explain, in terms of forces, why a satellite in a stable orbit does not fall towards the Earth or fly off into space.
- 16th August 2021Give one advantage of therapeutic cloning over using unrelated embryonic stem cells.
- 17th August 2021Why are xylem cells strengthened with lignin?
- 18th August 2021Why is glucose converted into starch for storage?
- 19th August 2021In pea plants, the allele for tall stems (T) is dominant over the allele for short stems (t). A homozygous tall plant (TT) is crossed with a homozygous short plant (tt). State the genotype and phenotype of all the offspring.
- 20th August 2021State one way in which high biodiversity benefits an ecosystem.
- 21st August 2021Explain how painting an iron gate helps prevent it from rusting.
- 22nd August 2021Why can an ionic solid not conduct electricity?
- 23rd August 2021Name the salt made from zinc oxide and nitric acid.
- 24th August 2021State what is meant by a catalyst.
- 25th August 2021State what happens to the carbon-to-carbon double bond of an alkene monomer during addition polymerisation.
- 26th August 2021State two long-term stores of carbon that removed carbon dioxide from the early atmosphere.
- 27th August 2021Define specific heat capacity.
- 28th August 2021Calculate the energy needed to melt 0.50 kg of a substance with a specific latent heat of fusion of 210000 J/kg.
- 29th August 2021State the number of protons and the number of neutrons in an alpha particle.
- 30th August 2021Name the type of electromagnetic wave used to sterilise medical equipment.
- 31st August 2021A transformer has a primary current of 2.0 A and a primary voltage of 230 V. The secondary voltage is 460 V. Assuming the transformer is 100 percent efficient, calculate the secondary current.