Anions
Definition
Anions are negatively charged ions formed when an atom gains one or more electrons. They play a crucial role in various biological and chemical processes.
5 Must Know Facts For Your Next Test
- Anions are attracted to the positive electrode (anode) during electrolysis.
- The most common anions in biological systems include chloride (Cl-), bicarbonate (HCO3-), and phosphate (PO4^3-).
- Anions are essential for maintaining the pH balance within cells and tissues.
- Anions can form ionic bonds with cations to create salts, which are vital for cellular functions.
- The presence of different anions can affect the solubility of compounds in water.
Review Questions
- What is the charge of an anion?
- Name two common anions found in biological systems.
- How do anions contribute to the formation of salts?
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Related terms
Cations: Positively charged ions formed when an atom loses one or more electrons.
Electrolyte: Substances that dissociate into ions in solution, making them capable of conducting electricity.
Ionic Bond: A type of chemical bond formed through the electrostatic attraction between oppositely charged ions.
