Daily Practice · GCSE Science
March 2015 - GCSE Science 5-a-day
Every GCSE Science sheet published in March 2015, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in March 2015
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st March 2015Describe phagocytosis.
- 2nd March 2015State why a reflex action is described as involuntary.
- 3rd March 2015A student counts 3, 5, 4 and 8 dandelion plants in four separate 1 m^2 quadrats. Calculate the mean number of dandelions per quadrat.
- 4th March 2015Define a finite resource, giving one example.
- 5th March 2015State one reason why simple covalent substances such as chlorine have low melting points.
- 6th March 2015Give the formula for percentage yield.
- 7th March 2015A student reacts excess zinc powder with 25 cm3 of copper sulfate solution in a polystyrene cup. The starting temperature is 21.0 degrees C and the maximum temperature reached is 58.5 degrees C. Calculate the temperature change.
- 8th March 2015State what happens to the boiling point of hydrocarbons as their chain length increases.
- 9th March 2015State two advantages of instrumental methods of analysis, such as GC-MS, compared with manual chemical tests.
- 10th March 2015Distinguish repeatability from reproducibility.
- 11th March 2015How does the resistance of a thermistor change as it gets hotter?
- 12th March 2015What is an alpha particle made of?
- 13th March 2015A skateboarder of mass 55 kg moving at 4 m/s collides with and grabs onto a stationary shopping trolley of mass 20 kg, and they move off together. Calculate their combined velocity immediately after the collision.
- 14th March 2015Describe the shape of the magnetic field produced around a long straight wire carrying a current.
- 15th March 2015State how the amount of red-shift is related to a galaxy's distance from Earth.
- 16th March 2015Explain why a plant cell placed in pure water does not burst.
- 17th March 2015A student measures the mean diameter of a zone of inhibition as 12 mm. Calculate its radius.
- 18th March 2015State the word equation for anaerobic respiration in human muscle cells.
- 19th March 2015State whether cystic fibrosis is caused by a dominant or a recessive allele.
- 20th March 2015In the rate experiment where a cross disappears, why is the result subjective?
- 21st March 2015An atom has an atomic number of 17 and a mass number of 37. How many neutrons does it have?
- 22nd March 2015Calculate the number of moles in 20 g of calcium carbonate. (Mr = 100)
- 23rd March 2015Aqueous copper sulfate solution is electrolysed using inert graphite electrodes. State the products formed at (a) the cathode and (b) the anode, giving a reason for each.
- 24th March 2015In the disappearing cross required practical, state the dependent variable that is measured.
- 25th March 2015A solid gives a lilac flame test. Name the metal ion present.
- 26th March 2015Name the two additional products that can form during the incomplete combustion of a hydrocarbon fuel.
- 27th March 2015Give the equation for efficiency in terms of energy.
- 28th March 2015Calculate the mass of 0.5 cubic metres of a material of density 2400 kilograms per cubic metre.
- 29th March 2015A resultant force of 45 N acts on an object of mass 9.0 kg. Calculate its acceleration. Use F = m x a.
- 30th March 2015A water wave has a wavelength of 0.4 m and a frequency of 2.5 Hz. Calculate its speed.
- 31st March 2015Explain how elements heavier than iron, such as gold, are created and distributed through the universe.