Daily Practice · GCSE Science
March 1965 5-a-day
Every sheet in March 1965
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st March 1965Give one piece of evidence that a solid sample is impure, based on its melting behaviour.
- 2nd March 1965Explain why carbon monoxide is dangerous even though it has no smell.
- 3rd March 1965Why can no device be 100 percent efficient?
- 4th March 1965Why is melting described as a physical change?
- 5th March 1965Calculate the weight of an object of mass 8.0 kg on Earth, where g = 9.8 N/kg.
- 6th March 1965A wave has a period of 0.005 s. Calculate its frequency.
- 7th March 1965State the difference between a natural satellite and an artificial satellite, and give one example of each.
- 8th March 1965Convert 0.05 mm into micrometres.
- 9th March 1965State the function of the valves in the heart and in veins.
- 10th March 1965Name the gas that is released as a product of photosynthesis.
- 11th March 1965Name the hormone that causes the liver to convert stored glycogen back into glucose.
- 12th March 1965The Arctic fox has small, rounded ears compared with the desert fennec fox, which has very large ears. State whether this is a structural, behavioural or functional adaptation, and explain how it helps the Arctic fox survive.
- 13th March 1965Explain why potable water is not required to be chemically pure.
- 14th March 1965Write the formula of calcium chloride and explain the ratio.
- 15th March 1965State the name given to a reaction in which a substance loses electrons.
- 16th March 1965Hydrogen reacts with chlorine to form hydrogen chloride: H2 + Cl2 -> 2HCl. Use the bond energies given to calculate the overall energy change for this reaction. Bond energies: H-H = 436 kJ/mol, Cl-Cl = 243 kJ/mol, H-Cl = 432 kJ/mol.
- 17th March 1965State the type of reaction that occurs when bromine adds across the double bond of an alkene.
- 18th March 1965Give two processes that removed carbon dioxide from the early atmosphere.
- 19th March 1965Calculate the kinetic energy of a 2.0 kg trolley moving at 4.0 m/s.
- 20th March 1965Give the equation linking energy transferred, charge flow and potential difference.
- 21st March 1965Who provided the evidence for the existence of the neutron, and roughly when relative to the nuclear model?
- 22nd March 1965Explain why a rucksack with wide, padded straps is more comfortable to carry than one with thin straps, for the same load.
- 23rd March 1965State the three factors needed for a current-carrying wire to experience a force due to the motor effect.
- 24th March 1965Why does taking repeat readings and calculating a mean improve the data?
- 25th March 1965Explain why the rate of an enzyme-controlled reaction decreases sharply above the enzyme's optimum temperature.
- 26th March 1965State two ways measles is prevented from spreading.
- 27th March 1965A patient's core body temperature has fallen to 35 degrees Celsius. State two physical responses their body makes to raise it back toward normal.
- 28th March 1965Explain one reason it took many years for Darwin's theory of evolution by natural selection to become widely accepted.
- 29th March 1965Write the electronic structure of an atom with 12 electrons.
- 30th March 1965Give two observations when lithium is added to water.
- 31st March 1965State the value of the Avogadro constant and what it counts.