Daily Practice · GCSE Science
July 2010 - GCSE Science 5-a-day
Every GCSE Science sheet published in July 2010, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in July 2010
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st July 2010Explain one benefit of the Human Genome Project.
- 2nd July 2010In the rate experiment where a cross disappears, why is the result subjective?
- 3rd July 2010An atom has an atomic number of 17 and a mass number of 37. How many neutrons does it have?
- 4th July 2010Calculate the number of moles in 20 g of calcium carbonate. (Mr = 100)
- 5th July 2010Explain why solid sodium chloride does not conduct electricity, but molten sodium chloride does.
- 6th July 2010In the gas-volume required practical measuring how concentration affects rate, state one variable that should be controlled.
- 7th July 2010A solid gives a lilac flame test. Name the metal ion present.
- 8th July 2010Name the two additional products that can form during the incomplete combustion of a hydrocarbon fuel.
- 9th July 2010Give the equation for efficiency in terms of energy.
- 10th July 2010Calculate the mass of 0.5 cubic metres of a material of density 2400 kilograms per cubic metre.
- 11th July 2010A box has a driving force of 250 N forward and friction of 180 N backward. Calculate the resultant force, including its direction.
- 12th July 2010A wave travels from air into glass and slows down. State what happens to its direction, and explain why in terms of wavelength.
- 13th July 2010State what a nebula is, and explain its role in the life cycle of a star.
- 14th July 2010State the function of the mitochondria.
- 15th July 2010Which component of blood transports carbon dioxide, urea and hormones?
- 16th July 2010Explain why anaerobic respiration releases much less energy per glucose molecule than aerobic respiration.
- 17th July 2010Name the hormone released by the adrenal glands that prepares the body for fight or flight.
- 18th July 2010A student places ten 1 m x 1 m quadrats at random across a school field of area 3000 m2 and counts a total of 45 dandelions across all ten quadrats. Estimate the total number of dandelions on the field.
- 19th July 2010State what is meant by sustainable development.
- 20th July 2010Why can metals conduct electricity when solid?
- 21st July 2010State the pH value of a neutral solution.
- 22nd July 2010State whether forming a new chemical bond requires energy or releases energy.
- 23rd July 2010State the general formula of the alkenes.
- 24th July 2010Explain, in terms of infrared radiation, how greenhouse gases keep the Earth warm.
- 25th July 2010A motor is supplied with 800 J of energy and wastes 240 J as heat. Calculate its efficiency as a percentage.
- 26th July 2010What is the difference between alternating and direct current?
- 27th July 2010What observation showed that the atom is mostly empty space?
- 28th July 2010A box of weight 120 N has a base area of 0.40 m^2. Calculate the pressure it exerts on the ground.
- 29th July 2010Explain why a current-carrying wire positioned exactly parallel to a magnetic field experiences no force.
- 30th July 2010In the microbiology practical, why are agar plates incubated at 25 degrees Celsius in schools rather than at 37 degrees Celsius?
- 31st July 2010An amylase reaction is complete after 200 seconds. Calculate the rate of reaction using rate = 1000 / time.