The reaction between calcium chloride (CaCl₂) and water (H₂O) is a dissolution reaction, meaning the calcium chloride dissolves in the water.

Here's the chemical equation:

CaCl₂ (s) + H₂O (l) → Ca²⁺ (aq) + 2Cl⁻ (aq)

Explanation:

* CaCl₂ (s): Solid calcium chloride

* H₂O (l): Liquid water

* Ca²⁺ (aq): Calcium ions dissolved in water (aqueous)

* 2Cl⁻ (aq): Chloride ions dissolved in water (aqueous)

Key points:

* This reaction is exothermic, meaning it releases heat. You'll notice the solution becoming warmer.

* Calcium chloride is a very soluble salt in water.

* This reaction forms an electrolyte solution, meaning it conducts electricity because of the dissolved ions.

Let me know if you have any other questions!