Daily Practice · GCSE Science
July 1963 5-a-day
Every sheet in July 1963
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st July 1963Name the salt made from zinc oxide and nitric acid.
- 2nd July 1963State what is meant by a catalyst.
- 3rd July 1963Explain why carboxylic acids are described as 'weak acids'.
- 4th July 1963Explain why the natural greenhouse effect is necessary for life on Earth, rather than being a purely harmful process.
- 5th July 1963Define specific heat capacity.
- 6th July 1963State the correct SI unit for density.
- 7th July 1963State the number of protons and the number of neutrons in an alpha particle.
- 8th July 1963Explain why ultraviolet radiation can be harmful to human skin.
- 9th July 1963State two ways of inducing a potential difference across a conductor using a magnetic field.
- 10th July 1963Convert 0.02 mm into micrometres (um).
- 11th July 1963Why does a food test for sugars need a water bath?
- 12th July 1963Explain what is meant by a double blind trial.
- 13th July 1963A 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 July 1963Name the equipment used to measure the abundance of a small plant species within a sample area.
- 15th July 1963State one benefit of recycling metal rather than extracting new metal from its ore.
- 16th July 1963Name the three types of strong chemical bonding.
- 17th July 1963Give the formula for atom economy.
- 18th July 1963Explain, in terms of the reaction pathway, why adding a catalyst increases the rate of a reaction without changing the overall energy change of the reaction.
- 19th July 1963Define the term 'hydrocarbon'.
- 20th July 1963State one advantage of running known reference substances alongside an unknown sample on the same chromatogram, rather than only comparing to published Rf values.
- 21st July 1963How is the uncertainty in a set of repeated readings usually estimated?
- 22nd July 1963Define electric current.
- 23rd July 1963A source has a half-life of 5 days and an initial activity of 1600 Bq. What is its activity after 15 days?
- 24th July 1963A shopping trolley has a mass of 25 kg. Calculate its weight, taking g = 9.8 N/kg.
- 25th July 1963A 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 July 1963Explain 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 July 1963Calculate the surface area to volume ratio of a cube of side 2 cm.
- 28th July 1963State one way that pathogens can be spread from person to person.
- 29th July 1963Explain, in terms of respiration, why a build-up of lactic acid causes muscle fatigue during vigorous exercise.
- 30th July 1963A man has genotype XY. State his sex, and state which sex chromosomes are found in the sperm cells he produces.
- 31st July 1963Give the resolution of a burette that can be read to the nearest half of a small division.