Daily Practice · GCSE Science
September 1982 5-a-day
Every sheet in September 1982
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st September 1982Calculate the Mr of Ca(OH)2. (Ca = 40, O = 16, H = 1)
- 2nd September 1982Concentrated sodium chloride solution (brine) is electrolysed using inert electrodes. State the products formed at the cathode and at the anode.
- 3rd September 1982Explain why increasing temperature increases the rate of a reaction, referring to both the frequency and the energy of collisions.
- 4th September 1982Which reagent is added, and in what colour change, to test for chlorine gas?
- 5th September 1982Explain how solid carbon particulates released by combustion can cause global dimming.
- 6th September 1982A lamp is supplied with 60 J and transfers 6 J as light. Calculate its efficiency as a percentage.
- 7th September 1982Define specific latent heat of fusion.
- 8th September 1982Calculate the weight of an object of mass 8.0 kg on Earth, where g = 9.8 N/kg.
- 9th September 1982Sound waves travel through a steel rail at approximately 5900 m/s. A sound wave sent along the rail has a frequency of 2950 Hz. Calculate its wavelength.
- 10th September 1982State the eventual fate of a star with a much greater mass than the Sun, after it explodes as a supernova.
- 11th September 1982Give the equation linking magnification, image size and real size.
- 12th September 1982Give one advantage and one disadvantage of a stent.
- 13th September 1982Name the gas that is released as a product of photosynthesis.
- 14th September 1982Name the gland often called the body's master gland.
- 15th September 1982State what is meant by the term ecosystem.
- 16th September 1982Explain why potable water is not required to be chemically pure.
- 17th September 1982Describe metallic bonding.
- 18th September 1982State the name given to a reaction in which a substance loses electrons.
- 19th September 1982State whether breaking a chemical bond requires energy or releases energy.
- 20th September 1982State the number of covalent bonds a carbon atom forms in a saturated hydrocarbon.
- 21st September 1982Give two processes that removed carbon dioxide from the early atmosphere.
- 22nd September 1982Calculate the kinetic energy of a 2.0 kg trolley moving at 4.0 m/s.
- 23rd September 1982Why does the national grid transmit electricity at a very high potential difference?
- 24th September 1982Why is the atomic model a good example of how scientific models change?
- 25th September 1982State the equation that links pressure, force and area.
- 26th September 1982In a simple d.c. electric motor, state the name and function of the component that reverses the current in the coil every half turn.
- 27th September 1982Define the independent variable.
- 28th September 1982Explain why the rate of an enzyme-controlled reaction decreases sharply above the enzyme's optimum temperature.
- 29th September 1982Name the type of pathogen that causes malaria.
- 30th September 1982Name the gland that monitors and controls blood glucose concentration.