Search and browse 1000’s of questions from past papers and view answers.
In 1910 Rutherford (pictured right) and his co-workers carried out an experiment in which thin sheets of gold foil were bombarded with alpha particles
(2007)
An equimolar mixture of chlorine and methane react together at room temperature only when ultraviolet light is present.
Environmentalists are concerned about the increasing abundance of carbon dioxide in the atmosphere.
Aluminium, sodium chloride and graphite are all crystalline solids.
To determine the concentration of ethanoic acid, CH3COOH, in a sample of vinegar, the vinegar was first diluted and then titrated against 25.0 cm3 portions of a previously standardised 0.10 M solution of sodium hydroxide, NaOH. One rough and two accurate
(2008)
