Define cation.

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Prepare for the ADEQ Water Treatment Levels 1 and 2. Study with tailored questions, in-depth explanations, and interactive quizzes. Elevate your skills and ensure exam success!

Multiple Choice

Define cation.

Explanation:
A cation is a positively charged ion, produced when an atom loses one or more electrons, leaving more protons than electrons. This positive charge is what characterizes it as a cation. In water chemistry and treatment, common cations you’ll encounter in solution include calcium (Ca2+) and sodium (Na+). The other descriptions don’t fit: a negatively charged ion is an anion, a neutral molecule has no net charge, and cations are not limited to solids—they exist in liquids and other phases as well.

A cation is a positively charged ion, produced when an atom loses one or more electrons, leaving more protons than electrons. This positive charge is what characterizes it as a cation. In water chemistry and treatment, common cations you’ll encounter in solution include calcium (Ca2+) and sodium (Na+). The other descriptions don’t fit: a negatively charged ion is an anion, a neutral molecule has no net charge, and cations are not limited to solids—they exist in liquids and other phases as well.

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