Daily Practice · GCSE Science
March 1990 5-a-day
Every sheet in March 1990
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st March 1990State the trend in reactivity down group 7 and name the most reactive halogen listed on the periodic table.
- 2nd March 1990Define the limiting reactant.
- 3rd March 1990Give one everyday example of an endothermic process.
- 4th March 1990State Le Chatelier's principle in your own words.
- 5th March 1990Explain how the sodium hydroxide test distinguishes aluminium ions from calcium ions, given that both give a white precipitate.
- 6th March 1990Why should you write down the equation even if you cannot finish the calculation?
- 7th March 1990A current of 2.0 A flows through a resistor for 30 s. Calculate the charge that flows. Use Q = I x t.
- 8th March 1990What causes the pressure of a gas on the walls of its container?
- 9th March 1990On a velocity-time graph, what does the area between the line and the time axis represent?
- 10th March 1990State the speed of all electromagnetic waves travelling through a vacuum.
- 11th March 1990State the name of the force that keeps a satellite in orbit around the Earth.
- 12th March 1990Give one advantage of therapeutic cloning over using unrelated embryonic stem cells.
- 13th March 1990Why are xylem cells strengthened with lignin?
- 14th March 1990Why is glucose converted into starch for storage?
- 15th March 1990A plant grown in the shade is shorter than a genetically identical plant of the same species grown in full sunlight. State whether this difference is genetic variation, environmental variation, or both.
- 16th March 1990State one way in which high biodiversity benefits an ecosystem.
- 17th March 1990Explain how painting an iron gate helps prevent it from rusting.
- 18th March 1990Why can an ionic solid not conduct electricity?
- 19th March 1990Name the salt made from zinc oxide and nitric acid.
- 20th March 1990State what is meant by a catalyst.
- 21st March 1990Name the small molecule typically released as a by-product during condensation polymerisation.
- 22nd March 1990Explain, in terms of gas molecules, why methane and water vapour, as well as carbon dioxide, are described as greenhouse gases.
- 23rd March 1990Define specific heat capacity.
- 24th March 1990A block has a volume of 50 cm^3 and a mass of 135 g. Calculate its density.
- 25th March 1990State the number of protons and the number of neutrons in an alpha particle.
- 26th March 1990A water wave has a frequency of 4 Hz and a wavelength of 0.5 m. Calculate its speed.
- 27th March 1990A transformer's primary coil is connected to a 12 V supply and has 60 turns. Calculate the number of turns needed on the secondary coil to produce an output of 3.0 V.
- 28th March 1990A cube-shaped model cell has sides of length 3 cm. Calculate the surface area to volume ratio of the cube. Give your answer in the form n : 1.
- 29th March 1990Why does a food test for sugars need a water bath?
- 30th March 1990Explain what is meant by a double blind trial.
- 31st March 1990Define a synapse.