Here's why:
* Ionic Compound: Sodium hydroxide is an ionic compound, meaning it is composed of positively charged sodium ions (Na+) and negatively charged hydroxide ions (OH-).
* Polarity: Water is a polar molecule, meaning it has a slightly positive end and a slightly negative end.
* Attraction: The positive sodium ions in NaOH are attracted to the negative end of water molecules, and the negative hydroxide ions are attracted to the positive end of water molecules. This attraction helps break apart the NaOH crystal lattice and allows the ions to be surrounded by water molecules, dissolving the NaOH.
Important Note: The dissolution of NaOH in water is an exothermic reaction, meaning it releases heat and can cause the solution to become very hot. This is why it's important to handle sodium hydroxide with caution and always add it slowly to water, never the other way around.
