Daily Practice · GCSE Science
April 2000 - GCSE Science 5-a-day
Every GCSE Science sheet published in April 2000, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in April 2000
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st April 2000State the difference between resolution and accuracy.
- 2nd April 2000Explain why the rate of an enzyme-controlled reaction decreases sharply above the enzyme's optimum temperature.
- 3rd April 2000How do bacteria make a person feel ill?
- 4th April 2000State what is meant by negative feedback.
- 5th April 2000Name the scientist who proposed the three-domain system of classification, and name the three domains.
- 6th April 2000Write the electronic structure of an atom with 12 electrons.
- 7th April 2000On what property are elements ordered in the modern periodic table?
- 8th April 2000In the equation 2H2 + O2 gives 2H2O, how many moles of water are formed from 3 mol of hydrogen?
- 9th April 2000A reaction profile shows the reactants at 220 kJ and the products at 340 kJ. State whether the reaction is exothermic or endothermic.
- 10th April 2000State the effect of increasing the temperature on the position of equilibrium of a reaction whose forward reaction is exothermic.
- 11th April 2000Why must dilute nitric acid be added before silver nitrate solution when testing for a halide ion?
- 12th April 2000State the equation for work done.
- 13th April 2000State the UK mains supply frequency and typical potential difference.
- 14th April 2000State the relationship between pressure and volume for a fixed mass of gas at constant temperature.
- 15th April 2000A car's velocity increases from 8 m/s to 20 m/s over 4 seconds. Calculate its acceleration.
- 16th April 2000State one medical use of X-rays and one safety precaution taken when X-rays are used in a hospital.
- 17th April 2000State two uses of artificial satellites.
- 18th April 2000Where in a plant are stem cells found?
- 19th April 2000Name the process by which dissolved sugars are transported in the phloem.
- 20th April 2000Why is photosynthesis described as endothermic?
- 21st April 2000State one difference between selective breeding and genetic engineering.
- 22nd April 2000State one human activity that reduces the amount of land available for other organisms.
- 23rd April 2000State the two substances that must both be present for iron to rust.
- 24th April 2000State the size range of a nanoparticle.
- 25th April 2000Why is aluminium extracted by electrolysis rather than by reduction with carbon?
- 26th April 2000Explain, using collision theory, why increasing the concentration of a reactant in solution increases the rate of a reaction.
- 27th April 2000State the functional group found in all carboxylic acids.
- 28th April 2000Explain, in one sentence, why the oceans were able to form only after the early Earth had cooled.
- 29th April 2000What happens to the energy described as 'wasted' in a transfer?
- 30th April 2000A 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.