# What Is the Difference Between Molecule and Compound Based on Their Visibility?  ## Metadata - Author: [[BYJU'S]] - Full Title: What Is the Difference Between Molecule and Compound Based on Their Visibility? - Category: #articles - Summary: A molecule is a group of two or more atoms bonded together, while a compound is made of two or more different elements chemically combined in a fixed ratio. Molecules cannot be seen with the naked eye, but compounds can be easily observed. Examples include ozone as a molecule and table salt as a compound. ## Highlights - All compounds are molecules. ([View Highlight](https://read.readwise.io/read/01jtvza1dsd48zrd35ebjc5s8h)) -  ([View Highlight](https://read.readwise.io/read/01jtvqp5d7ars6m8tp2srh4y1x)) - A molecule is a group of two or more atoms held together by chemical bonds. ([View Highlight](https://read.readwise.io/read/01jtvqr1jg88jt1p9pkm0g8ffa)) - A compound is a substance which is formed by two or more different types of elements which are united chemically in a fixed proportion. ([View Highlight](https://read.readwise.io/read/01jtvqr499q9zexgx2psscrepw)) - Molecules are invisible to the naked eye, whereas compounds are visible to the naked eye. ([View Highlight](https://read.readwise.io/read/01jtvqn143rgsjaexeen41702d))