These questions are a quick overview of the topics in this lesson. You are not expected to know this material before hand. The questions are intended to help you focus on material in the lesson. After you have studied the lesson you should be able to answer these and even more complicated questions. Ions are particles with an electric charge.
All cations have the same positive charge.
Table salt, NaCl, is an example of an ionic substance. Atoms like magnesium in Group 2A usually form an ion with a minus 2 charge. Al 3 Cl click for answer. Cations are formed when a particle gains electrons. click for answer. Calcium atoms are part of strong bones and teeth.