the ratio of the density of a substance to the density of a reference substance. Specific Gravity does not have any units. When water is used as the reference material, specific gravity equa

a uniformly dispersed mixture of molecules or ions. The substance being dissolved is the solute, while the substance into which the solute is dissolved is the solvent.

the ratio of the absolute error to the exact value.  Relative error =(exact value - observed value)/(exact value)

a product of a mixed waste processing system from which some recycleable wastes and som non-combustible materials have been removed. The remaining material is used as a fuel to create energy

The basic unit of electromagnetic energy. This characterizes the wave properties of electrons, as distinct from their particulate properties. This determines the principle energy level of an

A branch of physics that describes the wave properties of subatomic particles mathematically.

The tiniest amount of physical energy that can exist independently, especially a finite amount of electromagnetic radiation.

The polymerized form of chloroethene or vinyl chloride is a matrix of double the bonded carbon molecule CH2=CHCl. The double bonds break and become single bonds, and the vinyl chloride molec

A particle of matter with a positive electrical charge and a mass of 1 amu or 1.67E -24g. Although a proton has a mass 1837 times greater than an electron, it is nearly identical in mass to

In measurement indicates a set of measurements that are very similar. They may or may not be close to the true answer.

A positive integer constant that determines the principal energy level of an electron. Sometimes it is designated by the letters K, L or M. Related information.

a positively charged particle of antimatter that has the same mass and spin of an electron.

A scale ranging from 0 to 14, which is used to determine how acidic or basic a substance is. The pH of a substance is determined by taking the negative of the logarithm of the molar hydrogen

While groups are characterized by the number of electrons present in the outer shell, periods are characterized by the number of energy levels (shells) of electrons surrounding the nucleus.

an arrangement of elements in a geometric pattern designed to represent the periodic law by aligning elements into periods and groups. Elements with the same number of orbitals are in the sa

The electron configurations of the atoms of the elements vary periodically with their atomic number. Consequently, all properties of the elements that depend on their electron configuration

Either the actual charge of an atom (ion) in a substance, assuming the atom exists as a monatomic ion, or a hypothetical charge assigned by simple rules. 2) The charge an atom would have in

the quantum theory matter that combines Schrodinger's wave mechanics and Heisenburg's uncertainty principle and applies this to the behavior and nature of electrons. Orbital theory was formu

the area around an atom where according to orbital theory the probability of finding an electron is the greatest.

elements that are present in the gaseous state as single atoms. These elements are the noble gasses: He, Ne, Ar, Kr, Xe and Rn.