Chemistry (the etymology of the word has been much disputed) is the science of matter and the changes it undergoes. The science of matter is also addressed by physics, but while physics takes a more general and fundamental approach, chemistry is more specialized, being concerned with the composition, behavior (or reaction), structure, and properties of matter, as well as the changes it undergoes during chemical reactions. It is a physical science which studies various substances, atoms, molecules, crystals and other aggregates of matter whether in isolation or combination, and which incorporates the concepts of energy and entropy in relation to the spontaneity of chemical processes. (old) Wikipedia, Chemistry
Chemistry is the scientific discipline involved with compounds composed of atoms, i.e. elements, and molecules, i.e. combinations of atoms: their composition, structure, properties, behavior and the changes they undergo during a reaction with other compounds. Chemistry addresses topics such as how atoms and molecules interact via chemical bonds to form new chemical compounds. There are four types of chemical bonds: covalent bonds, in which compounds share one or more electron(s); ionic bonds, in which a compound donates one or more electrons to another compound to produce ions (cations and anions); hydrogen bonds; and Van der Waals force bonds.
In the scope of its subject, chemistry occupies an intermediate position between physics and biology. It is sometimes called the central science because it provides a foundation for understanding both basic and applied scientific disciplines at a fundamental level. Examples include plant chemistry (botany), the formation of igneous rocks (geology), how atmospheric ozone is formed and how environmental pollutants are degraded (ecology), the properties of the soil on the moon (astrophysics), how medications work (pharmacology), and how to collect DNA evidence at a crime scene (forensics). (current) Wikipedia, Chemistry
Chemistry has its roots in alchemy dating back to the early Egyptians.
The word 'alchemy', as the Arabic definite article al- indicates, is Arabic (al-klmya'). The origin of the word kimya', pre-Arabic, is controversial. Several more or less plausible or legendary hypotheses have been advanced. For some the word came from the Egyptian kemi (black), whence the Greek kemia which might indicate two things:
Egypt, 'the black land' according to Plutarch - alchemy would be preeminently the science of Egypt; 'the Black', the original matter of transmutation, i.e. the art of treating 'black metal' to produce precious metals.
For others, the word 'chemy' could have come from the Greek khymeia, 'fusion', i.e. the art of melting gold and silver. A Byzantine text states that Diocletian ordered the destruction of Egyptian books relating to khymeia, to the 'fusion' of gold and silver. alchemy, word origin
Russell
"Spheres occur only at wave amplitudes and the fact of its four positive and four negative efforts is the basis of the octave wave from which our spectrum, our octaves of the elements and our octaves of musical tones are derived.
"This 0, 1, 2, 3, 4, 4, 3, 2, 1, 0 octave sequence constitutes the heartbeat of the universe. It is the basis of our musical rhythms, our chemistry, our mathematics, our symmetry of design of all animal, mineral and vegetable forms and of our color spectrum of light." [Walter Russell, Home Study Course, 53 - Unit Nine - Lesson 35]
Schauberger
To contemporary technology, physics and chemistry the following are so far unknown:
1. The form of motion used by Nature herself (i.e. the cycloid-space-curve as the creative form-originating motion);
2. The temperature-form T2;
3. The flow-forms F1 and F2 and the phenomena of elemental transformation resulting from them. [The Energy Evolution - Harnessing Free Energy from Nature, NEW FORMS OF TEMPERATURE]
Temperature-form T2, which is related to flow-form F2, is generally known to contemporary technology, physics and chemistry. Its purpose in Nature is to precipitate out what has been decomposed, but not decayed, through F2 flow-forms, or what is unsuitable for the purposes of the next higher form of development. [The Energy Evolution - Harnessing Free Energy from Nature, NEW FORMS OF TEMPERATURE]
Ramsay
circumstances. And if we may add D to the subdominant chord of d F A C, so we may also, in other circumstances, add the subdominant chord as harmony to D, thus - D f a c, and no discord occur. There is only the interval of a second between F and G in this dominant 9th, and only an interval of a second between C and D in this subdominant 6th; a second standing alone is a discordant interval, as a poison by itself may kill; but as a poison by the processes of nature in chemistry compounded with something else may be an excellent medicine, so may a second when mixed and compounded with something else in music become an excellent harmony. Music is a great apothecary, skillful in compounds. [Scientific Basis and Build of Music, page 81]
"The organic structure of music is formed by the three ratios of 1:2, 1:3, and 1:5, from the laws of quantities and motions; but as it is only the ratio of 1:2 that has a pure, unmixed, invariable character, and as the notes produced by the first, second, and third powers of THREE have different degrees of centrifugal force, and the character of the notes produced by the first power of FIVE depends on the character of the notes from which they are derived, so the final character of the notes and chords is determined by the amount of force which they have acquired from the way in which they have been derived, and from their position in the system; and no matter how these notes may be afterwards placed, like chemical elements, they never lose their original force. [Scientific Basis and Build of Music, page 95]
See Also
Alchemy - Most Sacred Science
Bonding - Rejection
chemical analysis
Figure 14.04 - The Alchemical Light
Figure 2.16 - Alchemical Graphics showing Celestial and Terrestrial Realms
Figure 2.8 - Alchemists Artwork showing duality or Polar States
electrochemistry
Law of Chemical Affinity
Law of Chemical Dissociation
Law of Chemical Morphology
Law of Chemical Substitution
Law of Chemical Transposition
Transmutation