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Flashcards in them test atoms and compounds Deck (2)
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1
Q

John daltons atomic theory

A
  • all substances are made of tiny solid, neutral, indivisible particles called atoms
  • the atoms of a given element are identical; the atoms of different elements are different in some fundamental way
  • chemical compounds are formed when atoms of different elements combine with each other
  • chemical reactions involve reorganization of the atoms. atoms themselves are not changed in a chemical reaction.
2
Q

how does a mass spectrometer work?

A
  • the sample is heated and the gas is ionized
  • the ions are shot through a slit through a strong magnetic field
  • the magnetic field exerts a force on ions causing them to deflect their motion
  • the ions with the lightest mass are deflected the most and the ions with the heaviest mass are deflected the least.