Daily Practice · GCSE Science
June 1994 - GCSE Science 5-a-day
Every sheet in June 1994
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st June 1994An amylase reaction is complete after 200 seconds. Calculate the rate of reaction using rate = 1000 / time.
- 2nd June 1994Give one way of reducing the spread of malaria.
- 3rd June 1994Name the three parts common to every homeostatic control system.
- 4th June 1994State one advantage and one disadvantage of selective breeding in farm animals.
- 5th June 1994An atom has atomic number 11 and mass number 23. State the number of protons.
- 6th June 1994Why do elements in the same group have similar chemical properties?
- 7th June 1994Why is the amount of product directly proportional to the amount of limiting reactant?
- 8th June 1994State whether the combustion of methane is exothermic or endothermic.
- 9th June 1994In the Haber process, N2(g) + 3H2(g) -> 2NH3(g), state the effect of decreasing the pressure on the position of equilibrium.
- 10th June 1994A solution forms a green precipitate with sodium hydroxide solution. Which ion is present?
- 11th June 1994Give the equation for wave speed and its units.
- 12th June 1994Two resistors are connected in parallel across a 12 V battery. State the potential difference across each resistor.
- 13th June 1994Why does reducing the volume of a gas increase the pressure even though the molecules do not speed up?
- 14th June 1994A train travels at a constant velocity of 40 m/s for 3 minutes. Calculate the distance it travels, in km.
- 15th June 1994A microwave oven uses electromagnetic waves with a wavelength of 0.12 m. Calculate the frequency of these waves (speed of light = 3 x 10^8 m/s).
- 16th June 1994Put the following in order of increasing distance from the Sun: Mars, Venus, Saturn, Earth.
- 17th June 1994Give one risk of stem cell treatment.
- 18th June 1994Why does a potometer measure water uptake rather than transpiration directly?
- 19th June 1994Why does the rate of photosynthesis fall at very high temperatures?
- 20th June 1994Name the three-domain system of classification, and name the scientist most associated with proposing it.
- 21st June 1994Explain why large-scale deforestation increases the concentration of carbon dioxide in the atmosphere.
- 22nd June 1994State the four stages considered in a life cycle assessment.
- 23rd June 1994Why does simple molecular carbon dioxide have a much lower melting point than giant covalent silicon dioxide?
- 24th June 1994Define oxidation in terms of electrons.
- 25th June 1994State two units that the rate of a reaction can be measured in.
- 26th June 1994State the functional group found in all alcohols.
- 27th June 1994Explain why the natural greenhouse effect is necessary for life on Earth, rather than being a purely harmful process.
- 28th June 1994A 3 kg object is raised 2 m. Calculate the gravitational potential energy gained. (g = 9.8 N/kg)
- 29th June 1994State the correct SI unit for density.
- 30th June 1994A GM tube detects a count rate of 240 counts per minute from a source. After 15 days the count rate has fallen to 30 counts per minute. Show that this data is consistent with a half-life of 5 days.