Daily Practice · GCSE Science
August 2000 - GCSE Science 5-a-day
Every GCSE Science sheet published in August 2000, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in August 2000
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st August 2000Calculate the concentration in moles per cubic decimetre of a solution containing 0.5 mol in 250 cubic centimetres.
- 2nd August 2000State the energy transfer that occurs during an endothermic reaction.
- 3rd August 2000Balance the equation for the complete combustion of methane: CH4 + O2 -> CO2 + H2O
- 4th August 2000A sample produces only one spot when run in three different solvents. What does this suggest about the sample?
- 5th August 2000Why should a line of best fit be drawn rather than joining the plotted points?
- 6th August 2000In a parallel circuit, how do the branch currents relate to the total current?
- 7th August 2000State the approximate radius of an atom.
- 8th August 2000State two factors that increase a driver's thinking distance.
- 9th August 2000Name a typical material used to make a permanent magnet, and a typical material used to make an induced (temporary) magnet.
- 10th August 2000State, in one sentence, what the Big Bang model proposes about the early universe.
- 11th August 2000Give one adaptation of a root hair cell for absorbing mineral ions.
- 12th August 2000Explain 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.
- 13th August 2000A yeast culture respires without oxygen. Name the two products of this reaction, and name one industrial process that relies on it.
- 14th August 2000A 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.
- 15th August 2000Why is a polystyrene cup with a lid used in energy-change experiments?
- 16th August 2000Write the electronic structure of a magnesium atom (12 electrons).
- 17th August 2000A student measures the mass of a beaker of hydrochloric acid and marble chips as they react and finds it falls. Explain why.
- 18th August 2000Concentrated sodium chloride solution (brine) is electrolysed using inert electrodes. State the products formed at the cathode and at the anode.
- 19th August 2000Explain why increasing temperature increases the rate of a reaction, referring to both the frequency and the energy of collisions.
- 20th August 2000Name the gas that relights a glowing splint.
- 21st August 2000Name two gases that dissolve in atmospheric water droplets to cause acid rain.
- 22nd August 2000Define power and give its unit.
- 23rd August 2000Convert a density of 2.7 grams per cubic centimetre into kilograms per cubic metre.
- 24th August 2000A cyclist rides 300 m north then 300 m back south to the start. State the total distance travelled and total displacement.
- 25th August 2000Sound 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.
- 26th August 2000State the eventual fate of a star with a much greater mass than the Sun, after it explodes as a supernova.
- 27th August 2000Give one advantage of a light microscope over an electron microscope.
- 28th August 2000Name the blood vessel that carries deoxygenated blood from the heart to the lungs.
- 29th August 2000A lamp is placed 10 cm from pondweed. Calculate the relative light intensity using relative light intensity = 1 / distance^2.
- 30th August 2000Name the gland often called the body's master gland.
- 31st August 2000Thermus aquaticus is a species of bacterium that lives in hot springs at temperatures that would kill most other organisms. State the name given to an organism that is adapted to survive in such extreme conditions.