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  1. What Is a Chemical? Definition and Examples

    Oct 15, 2023 · Chemicals come in various forms depending on their composition, structure, and how they interact with other substances. Understanding the main types of chemicals helps classify the …

  2. PubChem

    Search chemicals by name, molecular formula, structure, and other identifiers. Find chemical and physical properties, biological activities, safety and toxicity information, patents, literature citations …

  3. Chemistry | Definition, Topics, Types, History, & Facts | Britannica

    5 days ago · chemistry, the science that deals with the properties, composition, and structure of substances (defined as elements and compounds), the transformations they undergo, and the …

  4. 12 Types of Chemicals Explained | Uses, Examples & Safety Tips

    Aug 28, 2025 · Learn about 12 types of chemicals with examples, uses, and safety tips. Explore acids, bases, polymers, pharmaceuticals, and more in everyday life.

  5. What is a Chemical ? | Nuclear Regulatory Commission - NRC

    Chemical changes are different from physical changes, which don't result in a change in substances. One example of a physical change is when water freezes into ice. While ice may have different …

  6. What Is and Is Not a Chemical? - ThoughtCo

    Dec 7, 2019 · A chemical is any substance that is made of matter, like solids, liquids, or gases. Light, heat, and sound are not chemicals since they are not made of matter. Chemicals can be both …

  7. Chemicals, Pesticides and Toxics Topics | US EPA

    May 15, 2025 · Learn how to safely handle chemicals, the effects of certain toxins, which substances are controlled or managed, and safer alternatives.

  8. HOME | Chemicals Inc

    About Us Specializing in toll and custom manufacturing of a wide variety of chemicals In business with several companies including fortune 500 companies Exceptional services include product …

  9. Substance (chemistry) - Wikipedia

    Chemical substances can exist in several different physical states or phases (e.g. solids, liquids, gases, or plasma) without changing their chemical composition. Substances transition between these …

  10. The ChemGroup

    ChemGroup is a leading distributor of industrial and specialty chemicals which is among the nation's largest, ranking in the top 25 in North America and top 100 globally.