Daily Practice · GCSE Science
July 1989 5-a-day
Every sheet in July 1989
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st July 1989State the effect of increasing the temperature on the position of equilibrium of a reaction whose forward reaction is exothermic.
- 2nd July 1989A solution gives a cream precipitate when acidified with dilute nitric acid and then treated with silver nitrate solution. Name the halide ion present.
- 3rd July 1989A device transfers 4500 J in 90 s. Calculate its power.
- 4th July 1989State the UK mains supply frequency and typical potential difference.
- 5th July 1989Why does a bicycle pump get warm when used?
- 6th July 1989A car's velocity increases from 8 m/s to 20 m/s over 4 seconds. Calculate its acceleration.
- 7th July 1989State one medical use of X-rays and one safety precaution taken when X-rays are used in a hospital.
- 8th July 1989State two uses of artificial satellites.
- 9th July 1989What happens to the DNA before mitosis begins?
- 10th July 1989State two conditions that increase the rate of transpiration.
- 11th July 1989A lamp is moved from 15 cm to 30 cm away. What happens to the light intensity?
- 12th July 1989State one difference between selective breeding and genetic engineering.
- 13th July 1989Name the biological process that removes carbon dioxide from the atmosphere and converts it into carbon compounds in a plant.
- 14th July 1989State one environmental benefit of recycling aluminium cans rather than making new aluminium from ore.
- 15th July 1989Explain why graphite conducts electricity but diamond does not.
- 16th July 1989State what is observed when magnesium ribbon is added to copper sulfate solution.
- 17th July 1989State the equation for the mean rate of a reaction in terms of the quantity of reactant used.
- 18th July 1989State the functional group found in all carboxylic acids.
- 19th July 1989Explain, in one sentence, why the oceans were able to form only after the early Earth had cooled.
- 20th July 1989Calculate the kinetic energy of a 0.5 kg ball moving at 6 m/s.
- 21st July 1989A 1.5 kg block of iron is heated from 18 degrees C to 98 degrees C. The specific heat capacity of iron is 450 J/(kg degrees C). Calculate the change in thermal energy.
- 22nd July 1989Explain why americium-241, an alpha emitter, is suitable for use in a smoke detector.
- 23rd July 1989State the speed at which all electromagnetic waves travel through a vacuum.
- 24th July 1989A transformer has 500 turns on its primary coil and 2500 turns on its secondary coil. State, with a reason, whether this is a step-up or a step-down transformer.
- 25th July 1989State one structure found in a bacterial cell but not in an animal cell.
- 26th July 1989Where is bile made and where is it stored?
- 27th July 1989Why does a vaccinated person not usually become ill when they meet the pathogen?
- 28th July 1989Name the two parts of the central nervous system (CNS).
- 29th July 1989Name the group of organisms that break down dead plant and animal matter, returning mineral ions to the soil.
- 30th July 1989Define a finite resource, giving one example.
- 31st July 1989State one reason why simple covalent substances such as chlorine have low melting points.