Zusammenfassung der Ressource
Moles and Atomic Structure
- Atom Types
- Ions: Charged particles.
- Isotopes: Different number of neutrons.
- Relative Masses
- Relative Atomic Mass: WeIghted mean mass of an atom of
an element compared with 1/12 the mass of a C-12 atom.
- Relative Isotopic Mass: Mass of an atom of an isotope
compared with 1/12 the mass of a C-12 atom.
- Relative Molecular Mass: Weighted mean mass of a
molecule compared with 1/12 the mass of a C-12 atom.
- Relative Formula Mass: Weighted mean mass of a formula
unit compared with 1/12 the mass of a C-12 atom.
- Formulae
- Empirical Formula: Smallest whole-number ratio
between atoms of different elements in a compound.
- Molecular Formula: Actual number
atoms of each element in a molecule.
- Moles
- Avagadro Constant: 6.02x10^(23) atoms per mole
- n=cV OR n=(cV)/1000
- n=V/24 OR n=V/24000
- N=m/Mr
- Concentration
- Concentrated: Large amount
(>10mol(dm)^3) of solute per (dm)^3.
- Dilute: Small amount
(<10mol(dm)^3) of solute per (dm)^3.