Chapter 1 Module 1 Condensed formulas and line notation

A condensed formula in chemistry represents a molecule’s chemical formula using the ____________ of the elements that make it up

Chemical symbols

A condensed formula is written in a ___________ without any subscripts. Basically, a shortened version of a structural formula that shows only the _____________________ in a molecule rather than their specific arrangement

Compact form; types and numbers of atoms

Example of condensed formula for propane is

CH3CH2CH3

Line notation or skeletal formula is a shorthand way of representing a chemical element or molecule using ______ and ____________ to represent atoms and their _________

Lines; symbols; bonds

In line notation, each vertex represents a ___________, while the hydrogen atoms are _______

Carbon atom; implied

The line notation for propane looks like this:

The zigzag line is used to indicate the _________ of the molecules and to signify that the molecule is either _______ or _____________, as __________ DO NOT have zigzags. Triple bonds have a ___________________

Geometry; single; double bond; triple bonds; 180 degree straight lines

Dashes or Wedges represent the bonds between atoms in a _________________. Dashes represent bonds _____________________ of the page. While Wedges represent bonds _________________________.

Three-dimensional structure; coming out of the plane; going into the page’s plane

Wedge comes _________ out of the plane of the page

Forwards/ Going into

Dashes goes _________ out of the plane of the page

Backwards/coming out

DAT tip: Any elements other than carbon and hydrogen are represented by their ____________

Chemical symbols