Daily Practice · GCSE Science
July 2021 - GCSE Science 5-a-day
Every GCSE Science sheet published in July 2021, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in July 2021
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st July 2021In pea plants, purple flower colour (allele H) is dominant over white flower colour (allele h). State the phenotype of a plant with genotype Hh.
- 2nd July 2021In the rate experiment where a cross disappears, why is the result subjective?
- 3rd July 2021An atom has an atomic number of 17 and a mass number of 37. How many neutrons does it have?
- 4th July 2021Calculate the number of moles in 20 g of calcium carbonate. (Mr = 100)
- 5th July 2021State the two materials commonly used as inert electrodes in electrolysis, and explain why they must be inert.
- 6th July 2021Explain how a catalyst increases the rate of a reaction without being used up.
- 7th July 2021A solid gives a lilac flame test. Name the metal ion present.
- 8th July 2021Name the two additional products that can form during the incomplete combustion of a hydrocarbon fuel.
- 9th July 2021Give the equation for efficiency in terms of energy.
- 10th July 2021Calculate the mass of 0.5 cubic metres of a material of density 2400 kilograms per cubic metre.
- 11th July 2021State whether friction is a contact force or a non-contact force.
- 12th July 2021Give one everyday example of a transverse wave and one everyday example of a longitudinal wave.
- 13th July 2021State what happens to the orbital speed needed for a stable orbit as the orbital radius increases.
- 14th July 2021State the function of the mitochondria.
- 15th July 2021Which component of blood transports carbon dioxide, urea and hormones?
- 16th July 2021Complete the word equation for anaerobic respiration in yeast: glucose -> ___ + ___
- 17th July 2021Explain why type 1 diabetes is treated with insulin injections rather than tablets.
- 18th July 2021A student places ten 1 m x 1 m quadrats at random across a school field of area 3000 m2 and counts a total of 45 dandelions across all ten quadrats. Estimate the total number of dandelions on the field.
- 19th July 2021Give one reason distillation of seawater requires a large energy input.
- 20th July 2021Why can metals conduct electricity when solid?
- 21st July 2021A 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.
- 22nd July 2021State whether forming a new chemical bond requires energy or releases energy.
- 23rd July 2021Name the alkene with the molecular formula C4H8.
- 24th July 2021Name the two gases released in large amounts by volcanic activity that formed most of the Earth's early atmosphere.
- 25th July 2021Name the energy store associated with a moving car.
- 26th July 2021What is the difference between alternating and direct current?
- 27th July 2021What observation showed that the atom is mostly empty space?
- 28th July 2021A spanner is used to loosen a bolt. Explain why using a longer spanner makes it easier to loosen the bolt.
- 29th July 2021State two ways of increasing the force produced by a motor effect setup, for a wire of fixed length at a fixed angle to the field.
- 30th July 2021In the microbiology practical, why are agar plates incubated at 25 degrees Celsius in schools rather than at 37 degrees Celsius?
- 31st July 2021State the type of large biological molecule that all enzymes are made from.