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The absolute entropy of a substance in its standard state at 298 K.

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How is colored crystal made?

However, not everyone knows that in addition to the traditional transparent, there is still an unusually beautiful and spectacular colored crystal, which is obtained through the addition of various metal oxides into the glass. They give the crystal unusually noble shades of red, purple, blue, green and pink colors.

Reaction Stoichiometry

Description of the quantitative relationships among substances as they participate in chemical reactions.

Nucleus

The very small, very dense, positively charged center of an atom containing protons and neutrons, as well as other subatomic particles.

Molecular Orbital

An orbit resulting from overlap and mixing of atomic orbitals on different atoms. An MO belongs to the molecule as a whole.

First Law of Thermodynamics

The total amount of energy in the universe is constant (also known as the Law of Conservation of Energy) energy is neither created nor destroyed in ordinary chemical reactions and physical changes.

Specific Gravity

The ratio of the density of a substance to the density of water.

Debye

The unit used to express dipole moments.

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Charle's Law

At constant pressure the volume occupied by a definite mass of gas is directly proportional to its absolute temperature.

Band

A series of very closely spaced, nearly continuous molecular orbitals that belong to the crystal as a whole.