Daily Practice · GCSE Science
December 1975 5-a-day
Every sheet in December 1975
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st December 1975Explain why a plant cell placed in pure water does not burst.
- 2nd December 1975Describe how phagocytes destroy pathogens in the body.
- 3rd December 1975A student counts 19 pulse beats in 10 seconds immediately after running. Calculate her heart rate in beats per minute.
- 4th December 1975State how many chromosomes are found in a normal human body cell, and how they are arranged.
- 5th December 1975In the rate experiment where a cross disappears, why is the result subjective?
- 6th December 1975An atom has an atomic number of 17 and a mass number of 37. How many neutrons does it have?
- 7th December 1975Calculate the number of moles in 20 g of calcium carbonate. (Mr = 100)
- 8th December 1975In the industrial extraction of aluminium, explain why the carbon anodes need to be replaced regularly.
- 9th December 1975State the condition, in terms of energy, that colliding particles must meet for a reaction to occur.
- 10th December 1975A solid gives a lilac flame test. Name the metal ion present.
- 11th December 1975Name the two additional products that can form during the incomplete combustion of a hydrocarbon fuel.
- 12th December 1975Give the equation for efficiency in terms of energy.
- 13th December 1975Calculate the mass of 0.5 cubic metres of a material of density 2400 kilograms per cubic metre.
- 14th December 1975Calculate the weight of an object of mass 8.0 kg on Earth, where g = 9.8 N/kg.
- 15th December 1975A wave has a period of 0.005 s. Calculate its frequency.
- 16th December 1975State the difference between a natural satellite and an artificial satellite, and give one example of each.
- 17th December 1975State the function of the mitochondria.
- 18th December 1975Which component of blood transports carbon dioxide, urea and hormones?
- 19th December 1975Name the gas that is released as a product of photosynthesis.
- 20th December 1975Name the hormone that causes the liver to convert stored glycogen back into glucose.
- 21st December 1975A 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.
- 22nd December 1975Explain why potable water is not required to be chemically pure.
- 23rd December 1975Why can metals conduct electricity when solid?
- 24th December 1975State the name given to a reaction in which a substance loses electrons.
- 25th December 1975State whether forming a new chemical bond requires energy or releases energy.
- 26th December 1975State the type of reaction that occurs when bromine adds across the double bond of an alkene.
- 27th December 1975Give two processes that removed carbon dioxide from the early atmosphere.
- 28th December 1975Calculate the kinetic energy of a 2.0 kg trolley moving at 4.0 m/s.
- 29th December 1975What is the difference between alternating and direct current?
- 30th December 1975What observation showed that the atom is mostly empty space?
- 31st December 1975Explain why a rucksack with wide, padded straps is more comfortable to carry than one with thin straps, for the same load.