What Is a Chemical? Definition and Examples - Science Notes and …
Oct 15, 2023 · A chemical is any substance with a definite composition and distinct properties. All matter is made of chemicals, …
PubChem
Search and explore chemical information in the world's largest free chemistry database. Search chemicals by name, molecular …
Substance (chemistry) - Wikipedia
In chemistry, a substance is a unique form of matter with constant chemical composition and characteristic properties. [1][2] …
Chemistry - Wikipedia
This page was last edited on 3 September 2026, at 16:53 (UTC).
CHEMICAL Definition & Meaning - Merriam-Webster
5 days ago · The meaning of CHEMICAL is of, relating to, used in, or produced by chemistry or the phenomena of chemistry. How to …
CHEMICAL | English meaning - Cambridge Dictionary
CHEMICAL definition: 1. any basic substance that is used in or produced by a reaction involving changes to atoms or…. Learn more.
ChemicalBook
Chemicalbook is a platform dedicated to provide the most valuable resources for chemical industry users. Here you can get chemical …
ChemicalBook
ChemicalBook是一家致力于为化学行业用户提供最有价值信息的资源平台，在这里可以使用中文名称，CAS号，英文名称，分子式， …
Periodic Table of Elements - PubChem
Interactive periodic table with up-to-date element property data collected from authoritative sources. Look up chemical element …
Chemistry | Definition, Topics, Types, History, & Facts | Britannica
Jul 31, 2026 · The rate at which chemical knowledge continues to accumulate is remarkable. Over time more than 8,000,000 …