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The mole
Term | Definition |
---|---|
Avogadro's number | 6.02*10^23, the number of atoms or molecules in 1 mole |
molar mass | The mass of one mole of a pure substance is called the molar mass of that substance |
molecule | A neutral group of atoms that are held together by covalent bonds |
Scientific notation | A method of expressing a quantity as a number multiplied by 10 to the appropriate power |
formula unit | The simplest collection of atoms from which an ionic compound's formula can be written |
molecular mass | Mass of an individual molecule or atom |
atomic mass | Mass of atoms |
molecular formula | Actual formula of a molecular compound |
density | The ratio of the mass of a substance to the volume of the substance |
Formula Mass | The sum of the average atomic masses of all atoms represented in the formula of any molecule, formula unit, or ion |
Percent Composition | The percentage by mass of each element in a compound |
Empirical Formula | A chemical formula that shows the composition of a compound in terms of the relative numbers and kinds of atoms in the simplest ratio |