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Monday, January 12, 2015

An/Cations & An/Cathodes

Q1: What is an ion?
A1: An ion is an atom that is not electrically neutral. You can categorize an ion in 2 ways based on its charge parity:
1. If the ion is positively charged (due to a deficiency in electrons), it's a cation.
2. If the ion is negatively charged (due to a excess of electrons), it's an anion.

Q2: What is an electrode?
A2: An electrode is a conducting contact that interfaces with some nonmetallic region. It may serve as an exit or entry point for current.

Q3: How can I categorize electrodes?
A3: You can categorize an electrode in 2 ways based on the type of ion it attracts:
1. If the electrode attracts cations, then it is a cathode
2. If the electrode attracts anions, then it is an anode

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