Daily Practice · GCSE Science
March 1954 5-a-day
Every sheet in March 1954
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st March 1954Give one piece of evidence that a solid sample is impure, based on its melting behaviour.
- 2nd March 1954Explain why carbon monoxide is dangerous even though it has no smell.
- 3rd March 1954Why can no device be 100 percent efficient?
- 4th March 1954Why is melting described as a physical change?
- 5th March 1954State whether friction is a contact force or a non-contact force.
- 6th March 1954A water wave has a wavelength of 0.4 m and a frequency of 2.5 Hz. Calculate its speed.
- 7th March 1954Explain how elements heavier than iron, such as gold, are created and distributed through the universe.
- 8th March 1954Convert 0.05 mm into micrometres.
- 9th March 1954State the function of the valves in the heart and in veins.
- 10th March 1954Complete the word equation for anaerobic respiration in yeast: glucose -> ___ + ___
- 11th March 1954State the type of diabetes in which the pancreas produces little or no insulin.
- 12th March 1954The 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 1954Give one reason distillation of seawater requires a large energy input.
- 14th March 1954Write the formula of calcium chloride and explain the ratio.
- 15th March 1954A 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.
- 16th March 1954Hydrogen 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 1954Describe the colour change seen when an alkene is shaken with bromine water.
- 18th March 1954Name the two gases released in large amounts by volcanic activity that formed most of the Earth's early atmosphere.
- 19th March 1954Name the energy store associated with a moving car.
- 20th March 1954Give the equation linking energy transferred, charge flow and potential difference.
- 21st March 1954Who provided the evidence for the existence of the neutron, and roughly when relative to the nuclear model?
- 22nd March 1954State the name of the upward force acting on an object placed in a fluid.
- 23rd March 1954A current-carrying wire experiences a force of 1.2 N when placed at right angles to a magnetic field of flux density 0.40 T, carrying a current of 6.0 A. Calculate the length of wire in the field.
- 24th March 1954Why does taking repeat readings and calculating a mean improve the data?
- 25th March 1954State the type of large biological molecule that all enzymes are made from.
- 26th March 1954State two ways measles is prevented from spreading.
- 27th March 1954State one difference between nervous and hormonal coordination.
- 28th March 1954State what is meant by a selection pressure.
- 29th March 1954A 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.
- 30th March 1954Give two observations when lithium is added to water.
- 31st March 1954State the value of the Avogadro constant and what it counts.