About 183,000 results
Open links in new tab
  1. PubChem

    Search and explore chemical information in the world's largest free chemistry database. Search chemicals by name, molecular formula, structure, and other identifiers.

  2. 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, regardless of whether it is natural or synthetic.

  3. 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 …

  4. CHEMICAL Definition & Meaning - Merriam-Webster

    2 days ago · The meaning of CHEMICAL is of, relating to, used in, or produced by chemistry or the phenomena of chemistry. How to use chemical in a sentence.

  5. Substance (chemistry) - Wikipedia

    In chemistry, a substance is a unique form of matter with constant chemical composition and characteristic properties. [1][2] Chemical substances may take the form of a single element or …

  6. 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,分子量,MDL号,EINECS号,结构式等多种方式检索日常工作中需 …

  7. ChemicalBook

    Here you can get chemical information (such as chemical physical properties, safety data, Excellent china suppliers and their web addresses and etc.)by searching the name, CAS number, molecular …

  8. 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.

  9. 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 …

  10. American Chemical Society

    The ACS family advances the chemical sciences by connecting the global community to trusted research, essential scientific intelligence, and award-winning journalism.