* Different elements: Potassium chloride contains potassium (K) and chlorine (Cl), while magnesium chloride contains magnesium (Mg) and chlorine (Cl).
* Different chemical formulas: The chemical formulas are different (KCl vs. MgCl₂). This indicates that they have different ratios of elements within the molecule.
* Different properties: Both compounds have distinct physical and chemical properties. For example, potassium chloride is used as a salt substitute, while magnesium chloride is used as a de-icer and in manufacturing.
Therefore, potassium chloride and magnesium chloride are distinct chemical compounds with different compositions and properties.
