Daily Practice · GCSE Science
September 2002 - GCSE Science 5-a-day
Every GCSE Science sheet published in September 2002, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in September 2002
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st September 2002State whether friction is a contact force or a non-contact force.
- 2nd September 2002A water wave has a wavelength of 0.4 m and a frequency of 2.5 Hz. Calculate its speed.
- 3rd September 2002Explain how elements heavier than iron, such as gold, are created and distributed through the universe.
- 4th September 2002State the function of the mitochondria.
- 5th September 2002Which component of blood transports carbon dioxide, urea and hormones?
- 6th September 2002Complete the word equation for anaerobic respiration in yeast: glucose -> ___ + ___
- 7th September 2002State the type of diabetes in which the pancreas produces little or no insulin.
- 8th September 2002A student places ten 1 m x 1 m quadrats at random across a school field of area 3000 m2 and counts a total of 45 dandelions across all ten quadrats. Estimate the total number of dandelions on the field.
- 9th September 2002Give one reason distillation of seawater requires a large energy input.
- 10th September 2002Why can metals conduct electricity when solid?
- 11th September 2002A student reacts 2.4 g of magnesium with excess dilute hydrochloric acid: Mg + 2HCl -> MgCl2 + H2. Relative atomic mass of Mg = 24. Calculate the number of moles of hydrogen gas produced.
- 12th September 2002State whether forming a new chemical bond requires energy or releases energy.
- 13th September 2002Describe the colour change seen when an alkene is shaken with bromine water.
- 14th September 2002Name the two gases released in large amounts by volcanic activity that formed most of the Earth's early atmosphere.
- 15th September 2002Name the energy store associated with a moving car.
- 16th September 2002What is the difference between alternating and direct current?
- 17th September 2002What observation showed that the atom is mostly empty space?
- 18th September 2002State the name of the upward force acting on an object placed in a fluid.
- 19th September 2002A current-carrying wire experiences a force of 1.2 N when placed at right angles to a magnetic field of flux density 0.40 T, carrying a current of 6.0 A. Calculate the length of wire in the field.
- 20th September 2002In the microbiology practical, why are agar plates incubated at 25 degrees Celsius in schools rather than at 37 degrees Celsius?
- 21st September 2002State the type of large biological molecule that all enzymes are made from.
- 22nd September 2002Why can HIV not be treated with antibiotics?
- 23rd September 2002State one difference between nervous and hormonal coordination.
- 24th September 2002State what is meant by a selection pressure.
- 25th September 2002A sample contains 90% of an isotope with mass number 10 and 10% of an isotope with mass number 11. Calculate the relative atomic mass, to 1 decimal place.
- 26th September 2002State the trend in reactivity down group 7 and name the most reactive halogen listed on the periodic table.
- 27th September 2002Define the limiting reactant.
- 28th September 2002Using the values in the previous question, calculate the overall energy change for the reaction.
- 29th September 2002State Le Chatelier's principle in your own words.
- 30th September 2002Explain how the sodium hydroxide test distinguishes aluminium ions from calcium ions, given that both give a white precipitate.