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Card 6
Front
The weighted mean mass of an atom of an element compared with one-twelfth of the mass oof an atom of carbon-12
Back
Card 7
Front
the weighthed mean mass of a molecule compared with one-twelfth of the mass of an atom compared with carbon-12.
Back
Card 8
Front
The weighted mean mass of a formula unit compared with one-twelfth of the mass of an atom of carbon-12.
Back
Card 9
Front
THe quantity whose unit is the mole. Chemists use 'amount of substance' as a means of counting atoms.
Back
Card 10
Front
The number of atoms per mole of the carbon-12 isotope (6.02x10^23 mol^-1).
Back
Card 11
Front
The amount of any substance containing as many particles as there are carbon atoms in exactly 12g of the crabon-12 isotope.
Back
Card 12
Front
The mass per mole of a substance. The units of molar mass are g mol-1.
Back
Card 13
Front
The simplest whole-number ratio of atoms of each element present in a compound.
Back
Card 14
Front
A small group of atoms held together by covalent bonds.
Back
Card 15
Front
The actual number of atoms of each element in a molecule.
Back
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