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What Is a Chemical? Definition and Examples
A chemical is any substance with a definite composition and distinct properties. All matter is made of chemicals, regardless of whether it is natural or synthetic.
PubChem
Search and explore chemical information in the world's largest free chemistry database. Search chemicals by name, molecular formula, structure, and other identifiers.
Chemistry - Wikipedia
Chemical reactions usually involve the making or breaking of chemical bonds. Oxidation, reduction, dissociation, acid–base neutralization and molecular rearrangement are some examples of common chemical reactions.
Element List – Element Names, Symbols, and Atomic Numbers
This element list includes the names, symbols, and atomic numbers of all 118 chemical elements, arranged in order of increasing atomic number. The atomic number is the number of protons in an atom of that element.
Chemistry - Simple English Wikipedia, the free encyclopedia
Chemical properties describe how a substance can change into something completely new. Unlike physical properties, which can be seen or measured without changing the substance, chemical properties can only be observed when a chemical reaction happens.
Periodic Table of Elements - PubChem
Interactive periodic table with up-to-date element property data collected from authoritative sources. Look up chemical element names, symbols, atomic masses and other properties, visualize trends, or even test your elements knowledge by playing a periodic table game!
Chemistry | Definition, Topics, Types, History, & Facts ...
Cooking, fermentation, glass making, and metallurgy are all chemical processes that date from the beginnings of civilization. Today, vinyl, Teflon, liquid crystals, semiconductors, and superconductors represent the fruits of chemical technology.
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