Daily Practice · GCSE Science
September 1978 5-a-day
Every sheet in September 1978
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st September 1978Explain why potable water is not required to be chemically pure.
- 2nd September 1978Why can an ionic compound conduct electricity when molten or dissolved but not when solid?
- 3rd September 1978State the name given to a reaction in which a substance loses electrons.
- 4th September 1978State the only substance produced when a hydrogen fuel cell reacts pure hydrogen with pure oxygen.
- 5th September 1978Propene (C3H6) reacts with steam in the presence of a catalyst. Name the catalyst, and name the type of compound formed.
- 6th September 1978Give two processes that removed carbon dioxide from the early atmosphere.
- 7th September 1978Calculate the kinetic energy of a 2.0 kg trolley moving at 4.0 m/s.
- 8th September 1978Give the colour and function of the earth wire.
- 9th September 1978What observation showed the nucleus is positively charged and very small?
- 10th September 1978State two factors, other than depth, that affect the pressure at a given point in a liquid.
- 11th September 1978State the name of the rule used to find the direction of the force on a current-carrying wire in a magnetic field, and name the three quantities it relates.
- 12th September 1978A student measures 24 cubic centimetres of gas in 3 minutes. Calculate the rate.
- 13th September 1978Explain why the rate of an enzyme-controlled reaction decreases sharply above the enzyme's optimum temperature.
- 14th September 1978Give one way of reducing the spread of malaria.
- 15th September 1978State what is meant by negative feedback.
- 16th September 1978Name the scientist who proposed the three-domain system of classification, and name the three domains.
- 17th September 1978Write the electronic structure of an atom with 12 electrons.
- 18th September 1978Why do elements in the same group have similar chemical properties?
- 19th September 1978Why is the amount of product directly proportional to the amount of limiting reactant?
- 20th September 1978A reaction profile shows the reactants at 220 kJ and the products at 340 kJ. State whether the reaction is exothermic or endothermic.
- 21st September 1978State the effect of increasing the temperature on the position of equilibrium of a reaction whose forward reaction is exothermic.
- 22nd September 1978A solution forms a green precipitate with sodium hydroxide solution. Which ion is present?
- 23rd September 1978Give the equation for wave speed and its units.
- 24th September 1978State the UK mains supply frequency and typical potential difference.
- 25th September 1978Why does reducing the volume of a gas increase the pressure even though the molecules do not speed up?
- 26th September 1978A car's velocity increases from 8 m/s to 20 m/s over 4 seconds. Calculate its acceleration.
- 27th September 1978State one medical use of X-rays and one safety precaution taken when X-rays are used in a hospital.
- 28th September 1978State two uses of artificial satellites.
- 29th September 1978Give one risk of stem cell treatment.
- 30th September 1978Why does a potometer measure water uptake rather than transpiration directly?