Flashcards
AS Chemistry
Flashcards do conjunto (16)
- 1ProtonCharge: +1
Relative mass: 1
Abbreviation: p+ - 2NeutronCharge: 0
Relative mass: 1
Abbreviation: n - 3ElectronCharge: -1
Relative mass: 1/1836
Abbreviation: e- - 4IsotopesAtoms of the same element with a different number of neutrons.
- 5Atomic number, ArNumber of protons in the nucleus
(top number) - 6Mass number, Mrnumber of protons and neutrons in the nucleus
(bottom number) - 7Isotopes react in the same way because...Chemical reactions only involve outer electrons.
No. of neutrons doesn't affect reactivity.
(Isotopes may have different properties) - 8Atoms react by...Gaining/losing electrons
- 9IonsCharged particles
- 10Positive ionsCations
- 11Negative ionsAnions
- 12Relative Isotopic MassThe mass of an atom of an isotope compared with 1/12th of carbon-12
- 13Relative isotopic mass = mass numberE.g. S (mass no. of 32) = 32.0
- 14Relative atomic massThe weighted mean mass of one atom of an element when compared with 1/12th of a carbon-12 atom
- 15Use of Mass SpectrometryMultiply each mass no. of the isotope with its percentage, then divide that by 100.
(79x53) (81x47) / 100 = 79.9 - 16Relative Molecular MassAdd the relative atomic masses of each atom together
Informações
- Descrição
- GCSE A level Chemistry FlashCards sobre AS Chemistry, criado por hannahcalleja10 em 10-09-2015.
- Criado por
- hannahcalleja10 · set 2015
- Atualizado
- 19 fev 2016
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