Flashcards
SU 2
Cards in this deck (7)
- 1Atomic structureAtoms themselves are made of subatomic particles, three of which are important to chemists: electrically positive protons, electrically negative electrons, and, in all except one type of H atom, electrically neutral neutrons.
- 2Where are protons, neutrons and electrons placed in an atom?The more massive protons and neutrons are placed in a very small nucleus, which contains all the positive charge and almost all the mass of the atom. Electrons with a much smaller mass surround the nucleus and occupy most of the volume.
- 3Atomic numberGives the number of protons in the nucleus of an element.
- 4Mass numberThe sum of the number of protons and neutrons of an atom.
- 5IsotopesAtoms with the same atomic number but different mass numbers
- 6Mass spectrometerWill separate ions of different mass and charge in a gaseous sample of ions. The instrument allows the researcher to determine the accurate mass of each ion, whether the ions are composed of individual atoms, molecules or molecule fragments.
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- Chemistry Flashcards on SU 2 , created by chenelle scheepers on 29/04/2018.
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- chenelle scheepers
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