Electron Shells Electron shells and orbitals hold electrons in a specific pattern. In a neutral atom, the number of electrons must equal the number of protons. This makes the number
Year: 2019
Molecular ShapeMolecular Shape
Molecular Shape Important The structure of a molecule is not complete until you know the molecular shape. Molecules which have seemingly an identical molecular shape often have very different
Polar Molecule and Nonpolar MoleculePolar Molecule and Nonpolar Molecule
The difference between a polar molecule and a nonpolar molecule depends on molecular geometry. Polar Bonds Polar result when two different elements share electrons and form a covalent bond.
Electronegativity and PolarityElectronegativity and Polarity
Bond polarity comes from different elements having different electronegativity; the innate ability to attract electrons within a covalent bond. Electronegativity Each element has a value for electronegativity to compare
Dimensional Analysis in ChemistryDimensional Analysis in Chemistry
One of the first road blocks you might find when you start chemistry is how to do dimensional analysis problems. Dimensional analysis problems do not lend
How to Study ChemistryHow to Study Chemistry
After so much advice on how to study chemistry, it is obvious a lot of “information” is not really helpful. What You Usually Hear There must be better advice than
Ions: Predict ChargeIons: Predict Charge
The Periodic Table You use the periodic table to assign standard charges to ions. Main Group and Transition Metals To assign charges to ions, you must recognize
IsotopesIsotopes
Consider only the nucleus when you are concerned with isotopes. Electrons play no part in isotopes or the atomic mass, Figure 2. Only protons and neutrons contribute to the mass
Matter: CompositionMatter: Composition
Matter by Composition You can describe matter based on composition. This means you describe collections of matter based on what makes it up. The first kind of description refers