Daily Practice · GCSE Science
August 2015 - GCSE Science 5-a-day
Every GCSE Science sheet published in August 2015, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in August 2015
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st August 2015Complete: acid + metal carbonate gives ...
- 2nd August 2015State the four factors that can increase the rate of a chemical reaction.
- 3rd August 2015Explain why carboxylic acids are described as 'weak acids'.
- 4th August 2015Name the two gases produced by photosynthesis and the substance it consumes alongside carbon dioxide.
- 5th August 2015By what factor does kinetic energy increase if speed is doubled?
- 6th August 2015Name the change of state when a liquid becomes a gas throughout the liquid, at its boiling point.
- 7th August 2015Define the term 'half-life' of a radioactive isotope.
- 8th August 2015Explain why ultraviolet radiation can be harmful to human skin.
- 9th August 2015State two ways of inducing a potential difference across a conductor using a magnetic field.
- 10th August 2015A 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).
- 11th August 2015Describe the positive result of the Biuret test.
- 12th August 2015What is tested during preclinical testing?
- 13th August 2015A ruler is released and falls 20 cm before being caught. Using distance = 0.5 x g x time^2 with g = 9.8 m/s^2, calculate the reaction time, to 3 significant figures.
- 14th August 2015Name the equipment used to measure the abundance of a small plant species within a sample area.
- 15th August 2015State the two main steps used to produce potable water from a fresh water source.
- 16th August 2015State the charge on a calcium ion (Group 2).
- 17th August 2015Why do companies prefer reactions with a high atom economy?
- 18th August 2015On a reaction profile diagram, the reactants are drawn at a higher energy level than the products. State whether the reaction is exothermic or endothermic.
- 19th August 2015Define the term 'hydrocarbon'.
- 20th August 2015Explain why the solvent level in the container must be below the pencil baseline.
- 21st August 2015In the specific heat capacity practical, why is the block insulated?
- 22nd August 2015Describe the current-potential difference graph for a filament lamp.
- 23rd August 2015State the difference between irradiation and contamination.
- 24th August 2015A shopping trolley has a mass of 25 kg. Calculate its weight, taking g = 9.8 N/kg.
- 25th August 2015A student wraps a coil of insulated wire around an iron nail and connects it to a battery. Name the device this creates, and state one way to increase its magnetic field strength.
- 26th August 2015Explain why red-shift observations support the idea that the universe is expanding, rather than Earth simply being at the centre of the universe with everything moving away from it.
- 27th August 2015Name the process that moves substances against a concentration gradient.
- 28th August 2015Name the vector that spreads the protist pathogen that causes malaria.
- 29th August 2015Explain, in terms of respiration, why a build-up of lactic acid causes muscle fatigue during vigorous exercise.
- 30th August 2015A man has genotype XY. State his sex, and state which sex chromosomes are found in the sperm cells he produces.
- 31st August 2015Why is the burette rinsed with the solution it is going to contain rather than with water?