Chemistry

• An Ion is an atom that has gained or lost electrons
• An Anion is a negatively charged ion
• A Cation is a positively charged ion
• Atoms that have lost at least on electron have a positive charge
• Atoms that gain one or more electrons have a negative charge
• An Ionic bond is the attraction between positively charged ions and negatively charged ions.
• When drawing an Ionic bond you show the transfer of electrons
• Covalent bond is made when a pair of electrons is shared between two atoms.
• When drawing a covalent bond you use circles to show sharing