Daily Practice · GCSE Science
January 2015 - GCSE Science 5-a-day
Every GCSE Science sheet published in January 2015, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in January 2015
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st January 2015Explain why increasing temperature increases the rate of a reaction, referring to both the frequency and the energy of collisions.
- 2nd January 2015State the reagent added, and the result, that shows a white solid contains sulfate ions.
- 3rd January 2015State the two products of the complete combustion of a hydrocarbon fuel.
- 4th January 2015State one way to increase the efficiency of a motor.
- 5th January 2015Why is the density of a gas much lower than that of the same substance as a liquid?
- 6th January 2015Calculate the weight of an object of mass 8.0 kg on Earth, where g = 9.8 N/kg.
- 7th January 2015Sound 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.
- 8th January 2015State the eventual fate of a star with a much greater mass than the Sun, after it explodes as a supernova.
- 9th January 2015Name two structures found in a plant cell but not in an animal cell.
- 10th January 2015Why is the wall of the left ventricle thicker than that of the right ventricle?
- 11th January 2015Name the gas that is released as a product of photosynthesis.
- 12th January 2015Name the gland often called the body's master gland.
- 13th January 2015State one abiotic factor that can affect the population of fish living in a pond.
- 14th January 2015Explain why potable water is not required to be chemically pure.
- 15th January 2015What type of bonding is present in a compound formed between a metal and a non-metal?
- 16th January 2015State the name given to a reaction in which a substance loses electrons.
- 17th January 2015State the two substances that react inside a hydrogen fuel cell.
- 18th January 2015State the number of covalent bonds a carbon atom forms in a saturated hydrocarbon.
- 19th January 2015Give two processes that removed carbon dioxide from the early atmosphere.
- 20th January 2015Calculate the kinetic energy of a 2.0 kg trolley moving at 4.0 m/s.
- 21st January 2015State the potential difference and frequency of the UK mains supply.
- 22nd January 2015What did Bohr add to the nuclear model?
- 23rd January 2015State the equation that links pressure, force and area.
- 24th January 2015In a simple d.c. electric motor, state the name and function of the component that reverses the current in the coil every half turn.
- 25th January 2015Why must the same volume of solution be used in every tube in an enzyme investigation?
- 26th January 2015Explain why the rate of an enzyme-controlled reaction decreases sharply above the enzyme's optimum temperature.
- 27th January 2015Describe the symptoms of rose black spot and its effect on the plant.
- 28th January 2015Name the gland that monitors and controls blood glucose concentration.
- 29th January 2015Explain why genetic engineering can introduce a new characteristic in a single generation, while selective breeding cannot.
- 30th January 2015Write the electronic structure of an atom with 12 electrons.
- 31st January 2015Why did Mendeleev leave gaps in his table?