Writing Ionic Formulas A chemical formula is a combination of elemental symbols and subscript numbers that is used to show the composition of a compound.
Here's a timeline of how Wrigley Field (Weeghman Park when it was first built) was constructed, and the various changes that have been made to it over the years. 1914: Opened April 23 as the home of the Federal League Chicago Whales, with a single deck that seated 14,000.
The field now holds 41,160 fans, due to the addition of a second deck in the grandstand in 1927-28 and larger bleachers in the outfield in 1937. Although Wrigley now has lights for night games, they were added in 1988, making it the last baseball stadium to add lights.