* Ionic Compound: Magnesium chloride is an ionic compound, meaning it's formed by the electrostatic attraction between positively charged magnesium ions (Mg²⁺) and negatively charged chloride ions (Cl⁻).
* Polar Solvent: Water (H₂O) is a polar solvent, meaning it has a positive and negative end due to the uneven sharing of electrons. This polarity allows water molecules to surround and attract the ions in magnesium chloride.
* Dissociation: When magnesium chloride dissolves in water, the water molecules pull apart the Mg²⁺ and Cl⁻ ions, breaking the ionic bonds and allowing them to move freely in solution. This process is called dissociation.
The dissociation reaction looks like this:
MgCl₂(s) → Mg²⁺(aq) + 2Cl⁻(aq)
* MgCl₂(s) represents solid magnesium chloride.
* Mg²⁺(aq) represents a magnesium ion dissolved in water.
* 2Cl⁻(aq) represents two chloride ions dissolved in water.
