Physical Property:

* Solubility: This refers to the ability of a substance to dissolve in water. If a substance dissolves in water, it forms a homogeneous mixture (solution) without changing its chemical composition. This is a physical property because the substance retains its original identity. Examples: sugar dissolving in water, salt dissolving in water.

Chemical Property:

* Reaction with water: Some substances react chemically with water, forming new compounds. This is a chemical property because the original substance undergoes a chemical change. Examples:

* Sodium reacting with water to form sodium hydroxide and hydrogen gas.

* Calcium oxide reacting with water to form calcium hydroxide.

In Summary:

* If a substance dissolves in water without undergoing a chemical change, the mixing is a physical property.

* If a substance reacts with water, forming new substances, the mixing is a chemical property.

Let me know if you'd like more examples!