Objectives. To understand and illustrate the Law of Constant Composition To learn about Dalton’s theory of atoms To learn how a formula describes a compound’s composition. Dalton Intro. A given compound always contains the same proportion by mass of the elements of which it is composed.
Law of Constant Composition (1799 Joseph Louis Proust)
You have 90 seconds to memorize these 5 parts of the theory!!
Put your notes away and write a set of rules for how to write a formula of a compound. Be as complete as you can be using what you have learned throughout your course
Aspirin, acetylsalicylic acid, C9H8O4
Aspirin in Motion