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Title: chemistry

Essay Details:

Subject: Science
Author: Katie F
Date: April 19, 2015
Level: University
Grade: A
Length: 2 / 418

Essay text:

The electrons are the particles which are involved in chemical reactions. Isotopes have different numbers of neutrons and this affects their physical properties. An isotope with fewer neutrons have: Lower masses Lower densities Faster rates of diffusion Lower melting and boiling points Mass Spectrometer Used to measure the relative masses of isotopes Used to find the relative abundance of the isotopes in a sample of an element When charged particles pass through a magnetic field, the particles are deflected by the magnetic field, and the amount of deflection depends upon the mass/charge ratio of the charged particle VAPORISATION The sample has to be in its gaseous form IONISATION The sample is bombarded by a stream of high-energy electron which knock an electron from an atom...

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