Atoms
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Relative Isotopic Mass | The mass of an atom of an isotope compared with one-twelfth of the mass of an atom of carbon-12
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| Relative Atomic Mass | The weighted mean mass of an atom of an element compared with one-twelfth of the mass of an atom of carbon-12
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| Relative Molecular Mass | The weighted mean mass of a molecule compared with one-twelfth of the mass of an atom of carbon-12
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| Relative Formula Mass | The weighted mean mass of a formula unit compared with one-twelfth of the mass of an atom of carbon-12
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| Amount of Substance | The quantity whose unit is the mole. Chemists use amount of substance as a means of counting atoms
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| The Avogadro Constant | Ther number of atoms per mole of the carbon-12 isotope (6.02*10^23)
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| A Mole | The amount of any substance containing as many particles as there are carbon atoms in exactly 12g of the carbon-12 isotope
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| Molar Mass | The mass per mole of a substance
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| Empirical Formula | The simplest whole number ratio of atoms of each element present in the compound
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| Molecule | A small group of atoms held together by covalent bonds
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| Molecular Formula | The actual number of atoms of each element in a molecule
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