Daily Practice · GCSE Science
January 2018 - GCSE Science 5-a-day
Every GCSE Science sheet published in January 2018, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in January 2018
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st January 2018Why do elements in the same group have similar chemical properties?
- 2nd January 2018Why is the amount of product directly proportional to the amount of limiting reactant?
- 3rd January 2018Explain, in terms of bonds, why breaking bonds is an endothermic process.
- 4th January 2018The forward reaction of a particular reversible reaction is exothermic. State whether the reverse reaction is exothermic or endothermic.
- 5th January 2018A solution forms a green precipitate with sodium hydroxide solution. Which ion is present?
- 6th January 2018Give the equation for wave speed and its units.
- 7th January 2018In a series circuit, the current through one lamp is 0.30 A. State the current through a second lamp in the same circuit.
- 8th January 2018Why does reducing the volume of a gas increase the pressure even though the molecules do not speed up?
- 9th January 2018State what the gradient of a distance-time graph represents.
- 10th January 2018Explain why ultraviolet, X-rays and gamma rays can be hazardous to human health, but radio waves are not.
- 11th January 2018Explain, in terms of forces, why a satellite in a stable orbit does not fall towards the Earth or fly off into space.
- 12th January 2018Give one risk of stem cell treatment.
- 13th January 2018Why does a potometer measure water uptake rather than transpiration directly?
- 14th January 2018Why does the rate of photosynthesis fall at very high temperatures?
- 15th January 2018In pea plants, the allele for tall stems (T) is dominant over the allele for short stems (t). A homozygous tall plant (TT) is crossed with a homozygous short plant (tt). State the genotype and phenotype of all the offspring.
- 16th January 2018Explain why large-scale deforestation increases the concentration of carbon dioxide in the atmosphere.
- 17th January 2018State the four stages considered in a life cycle assessment.
- 18th January 2018Why does simple molecular carbon dioxide have a much lower melting point than giant covalent silicon dioxide?
- 19th January 2018Define oxidation in terms of electrons.
- 20th January 2018State two units that the rate of a reaction can be measured in.
- 21st January 2018State what happens to the carbon-to-carbon double bond of an alkene monomer during addition polymerisation.
- 22nd January 2018Describe, in terms of wavelength, the difference between the radiation the Earth receives from the Sun and the radiation it re-emits from its surface.
- 23rd January 2018A 3 kg object is raised 2 m. Calculate the gravitational potential energy gained. (g = 9.8 N/kg)
- 24th January 2018State what happens to the internal energy of a substance as it is heated, in terms of the kinetic and potential energy of its particles.
- 25th January 2018A GM tube detects a count rate of 240 counts per minute from a source. After 15 days the count rate has fallen to 30 counts per minute. Show that this data is consistent with a half-life of 5 days.
- 26th January 2018Name the type of electromagnetic wave used to sterilise medical equipment.
- 27th January 2018A transformer has a primary current of 2.0 A and a primary voltage of 230 V. The secondary voltage is 460 V. Assuming the transformer is 100 percent efficient, calculate the secondary current.
- 28th January 2018A microscope has a x10 eyepiece lens and a x20 objective lens. Calculate the total magnification.
- 29th January 2018State two functions of bile.
- 30th January 2018What is an antigen?
- 31st January 2018Explain why reflex responses are faster than voluntary responses.