Is the mass of an atom/isotope compared to 1/12th of the mass of an atom of C-12
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Relative Atomic Mass (RAM, Ar)
Is the weighted mean/average mass of the atoms of all naturally occuring isoptopes of an element, compared to 1/12th the mass of C-12
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Relative Formula Mass (RFM)
Is the weighted mean/average mass of the molecules of a substance compared to 1/12th the mass of an atom of C-12Realtive
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Relative Molecular Mass (RMM)
Is the weighted mean/average mass of the molecules of a substance compared to 1/12th the mass of an atom of C-12. (The mass of the molecule = the sum of the realtive atomic masses of the atoms in the molecule)
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Emperical Formula
Is the simplest whole number ration of atoms in a compound
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Molecular Formula
Is the actual numbers of atomes of each element in a molecule
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Atomic Number
Is the number of protons in the nucleus of an atom
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Mass (Nucleon) Number
Is the number of protons + neutrons in the nucleus of an atom
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Isotopes
Are atoms of the same element with a different mass. The isotopes of an element have the same number of protons (and electrons), but different numbers of neutrons
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1st Ionisation Energy
Is the energy required to remove 1 electron from each atom in 1 mole of gaseous atoms to form 1 mole of gaseous 1+ ions
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2nd Ionisation Energy
Is the energy required to remove 1 electron from each 1+ ion in the 1 mole of gaseous 1+ ions to form 1 mole of gaseous 2+ ions
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Nth Ionisation Energy
Is the energy required to remove 1 electron from each (n-1)+ ion in 1 mole of gaseous (n-1)+ ions to form 1 mole of gaseous n+ ions
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Ionic Bond
Is the electrostatic attraction between oppositely charge ions
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Covalent Bond
Is a shared pair of electrons
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Dative Covalent Bond
Is a shared pair of electrons with only one of the atoms contributing both electrons
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Electron Pair Repulsion Theory
States that electron pairs repel each other and the number (and type) of electron pairs around the central atom determines the shape of the covalent molecule.
Is the attraction that each bonded atom has for the pair of electrons in the covalent bond
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Polar Bond
Is a covalent bond between two atoms with different electronegativities in which the bonded electron pair is drawn close to the more electronegative atom
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Polar Molecule
Is a molecule in which the electron density is not equally distributed resulting in areas of high electron density (delta minus) and areas of low electron density (delta plus)
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Metallic Bonding
Is the attraction between postitive ions and delocalised electrons
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Base
Is a proton acceptor
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Acid
Is a proton donor
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Salt
Is formed when the proton (H+) in an acid is replaced by either a metal ion or an ammoninum ion (NH4+)
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Oxidation
Involves the loss of elctrons or an increase in the oxidation number
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Reduction
Involves the gain of electrons or an decrease in the oxidation number
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Other cards in this set
Card 2
Front
Is the weighted mean/average mass of the atoms of all naturally occuring isoptopes of an element, compared to 1/12th the mass of C-12
Back
Relative Atomic Mass (RAM, Ar)
Card 3
Front
Is the weighted mean/average mass of the molecules of a substance compared to 1/12th the mass of an atom of C-12Realtive
Back
Card 4
Front
Is the weighted mean/average mass of the molecules of a substance compared to 1/12th the mass of an atom of C-12. (The mass of the molecule = the sum of the realtive atomic masses of the atoms in the molecule)
Back
Card 5
Front
Is the simplest whole number ration of atoms in a compound
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