Electrolytes are chemical substances that dissociate into free ions when dissolved in water or melted, allowing the solution to conduct electricity. These ions can be positively charged (cations) or negatively charged (anions), and their movement enables the conduction of electric current. Electrolytes include acids, bases, and salts such as sodium chloride (table salt), potassium, calcium, and magnesium compounds. In biological systems, electrolytes are essential for maintaining fluid balance, nerve function, muscle contraction, and various biochemical processes. Strong electrolytes completely dissociate into ions, while weak electrolytes only partially dissociate. Proper electrolyte balance is vital for health, and imbalances can lead to serious medical conditions. Electrolytes conduct electricity through ion movement, unlike metals where electric current flows by electron movement.
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