Daily Practice · GCSE Science
December 1985 5-a-day
Every sheet in December 1985
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st December 1985How is the temperature of a gas related to the motion of its molecules?
- 2nd December 1985A car's velocity increases from 8 m/s to 20 m/s over 4 seconds. Calculate its acceleration.
- 3rd December 1985State one medical use of X-rays and one safety precaution taken when X-rays are used in a hospital.
- 4th December 1985State two uses of artificial satellites.
- 5th December 1985How many pairs of chromosomes are there in a human body cell?
- 6th December 1985Where are most stomata found on a typical leaf, and why?
- 7th December 1985Name four limiting factors of photosynthesis.
- 8th December 1985State one difference between selective breeding and genetic engineering.
- 9th December 1985State what is meant by the term biodiversity.
- 10th December 1985Give one reason a manufacturer's own life cycle assessment of its product might not be fully objective.
- 11th December 1985Give one use of nanoparticles and one associated risk.
- 12th December 1985Give the ionic equation for neutralisation.
- 13th December 1985State what is shown on a rate graph when the line for the volume of gas produced becomes horizontal (flat).
- 14th December 1985State the functional group found in all carboxylic acids.
- 15th December 1985Name the two gases produced by photosynthesis and the substance it consumes alongside carbon dioxide.
- 16th December 1985State the equation for gravitational potential energy.
- 17th December 1985Name the change of state when a liquid becomes a gas throughout the liquid, at its boiling point.
- 18th December 1985Radium-226 (atomic number 88) decays by alpha emission. State the atomic number of the nucleus formed.
- 19th December 1985State the speed at which all electromagnetic waves travel through a vacuum.
- 20th December 1985A transformer has 500 turns on its primary coil and 2500 turns on its secondary coil. State, with a reason, whether this is a step-up or a step-down transformer.
- 21st December 1985A student views a red blood cell at a magnification of x2000. The image of the cell measures 20 mm across. Calculate the real width of the cell, giving your answer in micrometres (um).
- 22nd December 1985Explain what happens to an enzyme above its optimum temperature.
- 23rd December 1985Name three non-specific defences of the human body.
- 24th December 1985Name the two parts of the central nervous system (CNS).
- 25th December 1985Name the group of organisms that break down dead plant and animal matter, returning mineral ions to the soil.
- 26th December 1985State the two main steps used to produce potable water from a fresh water source.
- 27th December 1985State the charge on a calcium ion (Group 2).
- 28th December 1985Convert a concentration of 0.20 moles per cubic decimetre of NaOH into grams per cubic decimetre. (Mr = 40)
- 29th December 1985State the energy transfer that occurs during an exothermic reaction.
- 30th December 1985Hexadecane (C16H34) is cracked to produce dodecane (C12H26) and one other product. Calculate the molecular formula of the other product.
- 31st December 1985In a chromatography experiment, a dye spot travels 4.5 cm and the solvent front travels 6.0 cm. Calculate its Rf value.