The Elements Chapter is found in knowledge base documents. The chapter manages element properties and attributes used in molecular structures and estimation techniques.

In addition to all the standard elements, Cranium and Synapse use several special elements.

Element	Symbol	Description
Free	*	Wildcard, used to represent "any atom" in structures
Not Hydrogen	!H	Wildcard, used to represent any atom except hydrogen
Polymer end 1	p1	Used to represent an end of a polymer repeat unit
Polymer end 2	p2	Used to represent an end of a polymer repeat unit
Unpaired electron	e	Used to represent the unpaired electron in free radicals

The chapter's datapane is divided into five sections:

Section	Description
Descriptive Properties Section	contains fields for managing the element's basic identification and bonding information.
Constant Properties Section	contains fields for basic, constant properties such as melting point and boiling point.
Standard Entropy Section	contains fields for specifying the element's entropy at a standard condition of 298.15 K and 101.325 kPa and in a specified, standard form.
General Notes Section	used to store any general notes about the current element.
Associated Documents Section	used to store links to any documents associated with the current group.

The Elements chapter's commands are available from the chapter's Commands menu.

• Report Chemical Properties: activates the Report Properties Dialog that enables you to select physical property data and attributes to add to an open Report Document. (Also see documentation on Reporting Properties.
• Show Valued Properties: activates the Valued Properties Dialog: which lists the current entity's properties that have one or more values.
• Occurrence in Groups: activates the Element's Groups Dialog: which shows groups that contain one or more occurrences of the current element.

The menubar provides numerous other commands for navigation, bookmarking, file operations, units conversion, etc. See the documentation on Common Commands for details.

Topic	Description
Getting Started using Synapse	provides a quick tour of Synapse's capabilities including examples of chemical product design.
Getting Started using Cranium	provides a quick tour of Cranium's capabilities including a discussion of structure editing.
Estimating Chemical Properties	a short video demonstrating how to estimate the physical properties of chemicals using either Synapse or Cranium.
Estimating Mixture Properties	a short video demonstrating how to estimate the physical properties of mixtures using either Synapse or Cranium.