Final answer:
Calcium hydroxide, Ca(OH)2, is classified as a strong electrolyte because it fully dissociates into ions when dissolved in water, despite its low solubility.
Step-by-step explanation:
The question asks to classify Ca(OH)2 as a strong electrolyte, weak electrolyte, or nonelectrolyte. Calcium hydroxide, Ca(OH)2, is considered a strong electrolyte because when it dissolves in water, it dissociates completely into calcium ions (Ca²⁺) and hydroxide ions (OH⁻). Even though the solubility of Ca(OH)2 is relatively low, the portion that does dissolve dissociates 100% into ions, allowing it to conduct electricity well.