Molecular Equation

Science / Chemistry / Molecular Equation: A molecular equation is a balanced chemical equation in which ionic compounds are written as neutral formulas rather than as ions. For example, agno3(aq) + nacl(aq) = agcl(s) + nano3(aq) is a molecular equation; Ag+(aq) + NO3-(aq) + Na+(aq) + Cl-(aq) = agcl(s) + Na+(aq) + NO3-(aq) is not.

Molecular Sieve

Science / Chemistry / Molecular Sieve: A material that contains many small cavities interconnected with pores of precisely uniform size. Zeolites are an example. Molecular sieves adsorb molecules that are small enough to pass through their MORE

Molecular Weight

Science / Chemistry / Molecular Weight: The average mass of a molecule, calculated by summing the atomic weights of atoms in the molecular formula. Note that the words mass and weight are often used interchangeably in chemistry. MORE

Net Ionic Equation

Science / Chemistry / Net Ionic Equation: A net ionic equation is an ionic equation with all DEFINE[spectator ions'>spectator ions eliminated. For example, Ag+(aq) + NO3-(aq) + Na+(aq) + Cl-(aq) = agcl(s) + Na+(aq) + NO3-(aq) is an ionic equa MORE

Molecular Orbital

Science / Chemistry / Molecular Orbital: A wavefunction that describes the behavior of an electron in a molecule. Molecular orbitals are usually spread across many atoms in the molecule, and they are often described as a combination of atomi MORE

Molecular Model

Science / Chemistry / Molecular Model: A representation of a molecule. The model can be purely computational or it can be an actual physical object. Stick models show bonds, ball-and-stick models show bonds and atoms, and spacefilling mode MORE

Molecular Geometry

Science / Chemistry / Molecular Geometry: 1. The three-dimensional shape of a molecule. For example, methane (CH4) has a tetrahedral molecular geometry. 2. The study of molecular shapes. MORE