Daily Practice · GCSE Science
December 1995 - GCSE Science 5-a-day
Every sheet in December 1995
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st December 1995In the industrial extraction of aluminium, explain why the aluminium oxide is dissolved in molten cryolite rather than melted on its own.
- 2nd December 1995Explain why increasing the surface area of a solid reactant increases the rate of a reaction.
- 3rd December 1995Name the gas that relights a glowing splint.
- 4th December 1995Name two gases that dissolve in atmospheric water droplets to cause acid rain.
- 5th December 1995Define power and give its unit.
- 6th December 1995Convert a density of 2.7 grams per cubic centimetre into kilograms per cubic metre.
- 7th December 1995State whether friction is a contact force or a non-contact force.
- 8th December 1995A wave has a frequency of 50 Hz. Calculate its period.
- 9th December 1995Explain, in terms of forces, why an orbiting satellite does not travel off in a straight line.
- 10th December 1995Give one advantage of a light microscope over an electron microscope.
- 11th December 1995Name the blood vessel that carries deoxygenated blood from the heart to the lungs.
- 12th December 1995Complete the word equation for anaerobic respiration in yeast: glucose -> ___ + ___
- 13th December 1995State one risk factor linked to type 2 diabetes.
- 14th December 1995Thermus 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.
- 15th December 1995Give one reason distillation of seawater requires a large energy input.
- 16th December 1995Why can an ionic compound conduct electricity when molten or dissolved but not when solid?
- 17th December 1995A student reacts 2.4 g of magnesium with excess dilute hydrochloric acid: Mg + 2HCl -> MgCl2 + H2. Relative atomic mass of Mg = 24. Calculate the number of moles of hydrogen gas produced.
- 18th December 1995State the only substance produced when a hydrogen fuel cell reacts pure hydrogen with pure oxygen.
- 19th December 1995Define the term 'homologous series'.
- 20th December 1995Name the two gases released in large amounts by volcanic activity that formed most of the Earth's early atmosphere.
- 21st December 1995Name the energy store associated with a moving car.
- 22nd December 1995Give the colour and function of the earth wire.
- 23rd December 1995What observation showed the nucleus is positively charged and very small?
- 24th December 1995Write down the equation that links moment, force and distance.
- 25th December 1995A wire of length 0.20 m carries a current of 5.0 A at right angles to a magnetic field of flux density 0.60 T. Calculate the force on the wire.
- 26th December 1995A student measures 24 cubic centimetres of gas in 3 minutes. Calculate the rate.
- 27th December 1995State the type of large biological molecule that all enzymes are made from.
- 28th December 1995Give one way of reducing the spread of malaria.
- 29th December 1995Explain, in terms of blood vessels, how the skin helps to cool the body when it is too hot.
- 30th December 1995Define speciation.
- 31st December 1995A sample contains 90% of an isotope with mass number 10 and 10% of an isotope with mass number 11. Calculate the relative atomic mass, to 1 decimal place.