Daily Practice · GCSE Science
August 1969 5-a-day
Every sheet in August 1969
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st August 1969A microscope has a x10 eyepiece lens and a x20 objective lens. Calculate the total magnification.
- 2nd August 1969What is an enzyme?
- 3rd August 1969Describe phagocytosis.
- 4th August 1969Explain why reflex responses are faster than voluntary responses.
- 5th August 1969Define community, in ecological terms.
- 6th August 1969Explain why potable water is not the same as pure water.
- 7th August 1969Explain why sodium chloride conducts electricity when molten but not when solid.
- 8th August 1969Give the formula for percentage yield.
- 9th August 1969A 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.
- 10th August 1969Name the two industrial methods of cracking.
- 11th August 1969State two advantages of instrumental methods of analysis, such as GC-MS, compared with manual chemical tests.
- 12th August 1969Distinguish repeatability from reproducibility.
- 13th August 1969How does the resistance of a thermistor change as it gets hotter?
- 14th August 1969What is an alpha particle made of?
- 15th August 1969Explain, using Newton's Third Law, why a swimmer is able to push themselves forward by pushing backward against the water.
- 16th August 1969State what happens to the magnetic field around a straight current-carrying wire if the direction of the current is reversed.
- 17th August 1969State what red-shift shows about the motion of most distant galaxies.
- 18th August 1969Explain why a plant cell placed in pure water does not burst.
- 19th August 1969Explain why a small number of healthy volunteers are given a very low dose of a new drug in the first stage of a clinical trial.
- 20th August 1969State the word equation for aerobic respiration.
- 21st August 1969State one ethical concern raised by embryo screening.
- 22nd August 1969In the rate experiment where a cross disappears, why is the result subjective?
- 23rd August 1969An atom has an atomic number of 17 and a mass number of 37. How many neutrons does it have?
- 24th August 1969Calculate the number of moles in 20 g of calcium carbonate. (Mr = 100)
- 25th August 1969State the name given to the negative electrode in electrolysis.
- 26th August 1969Explain why using a light sensor and data logger is more reliable than timing by eye in the disappearing cross practical.
- 27th August 1969A solid gives a lilac flame test. Name the metal ion present.
- 28th August 1969Name the two additional products that can form during the incomplete combustion of a hydrocarbon fuel.
- 29th August 1969Give the equation for efficiency in terms of energy.
- 30th August 1969Calculate the mass of 0.5 cubic metres of a material of density 2400 kilograms per cubic metre.
- 31st August 1969A cyclist rides 300 m north then 300 m back south to the start. State the total distance travelled and total displacement.