Daily Practice · GCSE Science
July 2003 - GCSE Science 5-a-day
Every GCSE Science sheet published in July 2003, with answers. Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
Every sheet in July 2003
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st July 2003State the two main steps used to produce potable water from a fresh water source.
- 2nd July 2003State the charge on a calcium ion (Group 2).
- 3rd July 2003Convert 250 cubic centimetres into cubic decimetres.
- 4th July 2003A student heats solid copper carbonate strongly in a test tube, and it breaks down into copper oxide and carbon dioxide. Heating must be continued throughout the reaction for it to keep going. State whether this thermal decomposition reaction is exothermic or endothermic, and explain your reasoning.
- 5th July 2003Name the process used to separate crude oil into fractions.
- 6th July 2003Write the formula for calculating an Rf value.
- 7th July 2003Readings have a mean of 20.0 cm and a range of 1.0 cm. Calculate the percentage uncertainty.
- 8th July 2003What happens to the total resistance when a second resistor is added in parallel, and why?
- 9th July 2003What happens inside the nucleus when a beta particle is emitted?
- 10th July 2003State Newton's First Law of Motion.
- 11th July 2003Two bar magnets are placed with their north poles facing each other. State what happens to the magnets.
- 12th July 2003State what is meant by red-shift.
- 13th July 2003State three factors that increase the rate of diffusion.
- 14th July 2003Name the vector that spreads the protist pathogen that causes malaria.
- 15th July 2003Explain why breathing rate and breathing depth both increase during exercise.
- 16th July 2003In pea plants, purple flower colour (allele H) is dominant over white flower colour (allele h). State the phenotype of a plant with genotype Hh.
- 17th July 2003What does 'concordant' mean when applied to titres?
- 18th July 2003What did the alpha scattering experiment show that the plum pudding model could not explain?
- 19th July 2003Magnesium is burned in an open crucible and the mass increases. Explain why.
- 20th July 2003State the two materials commonly used as inert electrodes in electrolysis, and explain why they must be inert.
- 21st July 2003Explain how a catalyst increases the rate of a reaction without being used up.
- 22nd July 2003Describe the result of the test for carbon dioxide.
- 23rd July 2003Give one piece of evidence used to link human activity to recent climate change.
- 24th July 2003Give one advantage and one disadvantage of wind power.
- 25th July 2003Why does the temperature stay constant while a substance boils?
- 26th July 2003A gardener pushes a mower with a force of 60 N through a distance of 8.0 m. Calculate the work done. Use W = F x s.
- 27th July 2003Give one everyday example of a transverse wave and one everyday example of a longitudinal wave.
- 28th July 2003State what happens to the orbital speed needed for a stable orbit as the orbital radius increases.
- 29th July 2003Where is the DNA found in a bacterial cell?
- 30th July 2003Name the substance in red blood cells that binds oxygen.
- 31st July 2003Name the organelle in a plant cell where photosynthesis takes place.