Daily Practice · GCSE Science
June 1984 5-a-day
Every sheet in June 1984
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st June 1984Explain why sodium chloride conducts electricity when molten but not when solid.
- 2nd June 1984Convert a concentration of 0.20 moles per cubic decimetre of NaOH into grams per cubic decimetre. (Mr = 40)
- 3rd June 1984State the energy transfer that occurs during an exothermic reaction.
- 4th June 1984Balance the equation for the complete combustion of methane: CH4 + O2 -> CO2 + H2O
- 5th June 1984In a chromatography experiment, a dye spot travels 4.5 cm and the solvent front travels 6.0 cm. Calculate its Rf value.
- 6th June 1984Define the resolution of a measuring instrument.
- 7th June 1984Two 4 ohm resistors are connected in series. Calculate the total resistance.
- 8th June 1984Which type of radiation is stopped by a sheet of paper?
- 9th June 1984State two factors that increase a driver's thinking distance.
- 10th June 1984Name a typical material used to make a permanent magnet, and a typical material used to make an induced (temporary) magnet.
- 11th June 1984State, in one sentence, what the Big Bang model proposes about the early universe.
- 12th June 1984Why does active transport require energy?
- 13th June 1984Explain why a small number of healthy volunteers are given a very low dose of a new drug in the first stage of a clinical trial.
- 14th June 1984A yeast culture respires without oxygen. Name the two products of this reaction, and name one industrial process that relies on it.
- 15th June 1984A man who is a known carrier of cystic fibrosis (Ff) has children with a woman who has been confirmed to carry no cystic fibrosis allele at all (FF). Explain why none of their children can have cystic fibrosis.
- 16th June 1984Name one way to make a rate of reaction experiment more valid rather than simply more precise.
- 17th June 1984Define an isotope.
- 18th June 1984A sealed flask containing 12.0 g of reactants is shaken and a reaction occurs. What is the total mass afterwards?
- 19th June 1984Concentrated sodium chloride solution (brine) is electrolysed using inert electrodes. State the products formed at the cathode and at the anode.
- 20th June 1984Explain why increasing temperature increases the rate of a reaction, referring to both the frequency and the energy of collisions.
- 21st June 1984State the difference between a pure substance and a formulation.
- 22nd June 1984Explain why burning a fuel can produce nitrogen oxides even if the fuel itself contains no nitrogen.
- 23rd June 1984Name three renewable energy resources.
- 24th June 1984State the equation for density.
- 25th June 1984A cyclist rides 300 m north then 300 m back south to the start. State the total distance travelled and total displacement.
- 26th June 1984Sound waves travel through a steel rail at approximately 5900 m/s. A sound wave sent along the rail has a frequency of 2950 Hz. Calculate its wavelength.
- 27th June 1984State the eventual fate of a star with a much greater mass than the Sun, after it explodes as a supernova.
- 28th June 1984Why is a stain such as iodine used when preparing a slide?
- 29th June 1984Give two adaptations of a red blood cell.
- 30th June 1984A lamp is placed 10 cm from pondweed. Calculate the relative light intensity using relative light intensity = 1 / distance^2.