Chemical compound - Wikipedia
网页A chemical compound is a substance composed of atoms from more than one element held together by chemical bonds. Learn about the history, types, formulae, and examples of chemical compounds.
Chemical compound | Definition, Examples, & Types | Britannica
网页A chemical compound is a substance composed of identical molecules of two or more elements. Learn about the basic types of compounds (molecular and ionic), their properties, and how they are formed and classified.
3.1: Types of Chemical Compounds and their Formulas
网页2023年7月12日 · Learn the differences between covalent and ionic bonding and how to write molecular formulas for covalent compounds. See examples of elements and compounds that exist as covalent molecules or ions.
What Is a Compound in Chemistry? Definition and Examples
网页2020年10月24日 · A compound is a substance made of two or more elements chemically bonded in a fixed ratio. Learn how to write compound formulas, types of compounds, and the difference between a compound and a molecule.
PubChem
网页PubChem 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.
Definition of Compounds & Elements - Examples, Types
网页What is a Compound? - A compound is a chemical substance can be broken down into two or more simpler substances. A chemical element that makeup compounds by combining with each other elements in definite proportions. Learn about Elements and Compounds Examples Here.
Definition and classification of chemical compounds
网页Learn about chemical compounds and their classification, properties, and reactions from Britannica's editors. Find examples of common compounds, such as methane, asparagine, arginine, RNA, and acetylcholine.
Chemical Compounds - Definition, Examples, Types
网页2024年7月1日 · Learn what chemical compounds are, how they are formed, and what types of compounds exist. Explore the properties, examples, and uses of common compounds such as water, sodium chloride, carbon dioxide, and more.
5: Molecules and Compounds - Chemistry LibreTexts
网页5.3: Chemical Formulas - How to Represent Compounds A chemical formula is an expression that shows the elements in a compound and the relative proportions of those …
Chemical compound - Elements, Molecules, Reactions | Britannica
网页Learn how chemical compounds are classified according to their elements, bonds, and reactions. Find out the definitions and examples of ionic, molecular, organic, and inorganic compounds, as well as acids, bases, and oxidation-reduction reactions.
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