CHEM 1127Q Lecture 5: Chapter 2

• School: UConn
• Department: Chemistry
• Course: CHEM 1127Q
• Professor: Dr. Niluka Wasalathanthri

Document Summary

A representation of a molecule that uses chemical symbols to indicate the types of atoms followed by subscripts to show the number of atoms of each type in the molecule. Subscript only used when more than 1 atom of a given type is present molecular formulas are also used as abbreviations for the names of compounds. Gives same information as the molecular formula but also shows how the atoms are connected in the molecule. Indicates the number of atoms in the molecule. The lines represent the bonds that hold the atoms together. Indicates the types of atoms present and the simplest whole number ratio of the number of atoms (or ions) in the compound. To make a positively charged ion, you remove an electron from a neutral atom. Produced by removing electrons from a neutral atom. All group 1 metals produce +1 ions. All group 2 metals produce +2 ions. Transition metals usually produce multiple positively charged ions.