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Bookmark or Share- PubChemPubChem is the world's largest collection of freely accessible chemical information. Search chemicals by name, molecular formula, structure, and other identifiers. Find chemical and physical properties, biological activities, safety and toxicity information, patents, literature citations and more. We are constantly adding new data and working ...
- What Is a Chemical? Definition and Examples - Science Notes and ProjectsA chemical is a substance with a specific composition. It is an element, an alloy, or a compound made up of two or more elements combined in a fixed ratio. For instance, water (H 2 O) is a chemical because it consists of hydrogen and oxygen combined in a 2:1 ratio. All matter either is a chemical or else consists of chemicals.
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