Daily Practice · GCSE Science
February 1989 5-a-day
Every sheet in February 1989
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st February 1989Give one use of nanoparticles and one associated risk.
- 2nd February 1989Give the ionic equation for neutralisation.
- 3rd February 1989State what is shown on a rate graph when the line for the volume of gas produced becomes horizontal (flat).
- 4th February 1989State the functional group found in all alcohols.
- 5th February 1989Explain why the natural greenhouse effect is necessary for life on Earth, rather than being a purely harmful process.
- 6th February 1989State the equation for gravitational potential energy.
- 7th February 1989State the correct SI unit for density.
- 8th February 1989Radium-226 (atomic number 88) decays by alpha emission. State the atomic number of the nucleus formed.
- 9th February 1989State what happens to the frequency of a wave when it is refracted as it passes into a different material.
- 10th February 1989State two factors that increase the size of the potential difference induced in a coil.
- 11th February 1989Convert 0.02 mm into micrometres (um).
- 12th February 1989Explain what happens to an enzyme above its optimum temperature.
- 13th February 1989Name three non-specific defences of the human body.
- 14th February 1989Put these into the correct order for a reflex arc: motor neuron, receptor, effector, relay neuron, sensory neuron.
- 15th February 1989State one structural adaptation of a polar bear that helps it survive in a cold environment.
- 16th February 1989State one benefit of recycling metal rather than extracting new metal from its ore.
- 17th February 1989Name the three types of strong chemical bonding.
- 18th February 1989Convert a concentration of 0.20 moles per cubic decimetre of NaOH into grams per cubic decimetre. (Mr = 40)
- 19th February 1989State the energy transfer that occurs during an exothermic reaction.
- 20th February 1989Name the process used to separate crude oil into fractions.
- 21st February 1989In a chromatography experiment, a dye spot travels 4.5 cm and the solvent front travels 6.0 cm. Calculate its Rf value.
- 22nd February 1989Define the resolution of a measuring instrument.
- 23rd February 1989Two 4 ohm resistors are connected in series. Calculate the total resistance.
- 24th February 1989Which type of radiation is stopped by a sheet of paper?
- 25th February 1989State Newton's First Law of Motion.
- 26th February 1989Two bar magnets are placed with their north poles facing each other. State what happens to the magnets.
- 27th February 1989State what is meant by red-shift.
- 28th February 1989Why does active transport require energy?