The physical quantity that has the unit Pascal (Pa) is pressure.

Here's a breakdown:

* Pressure is defined as the force applied perpendicularly to a surface per unit area.

* Pascal is the SI unit of pressure, named after the French scientist Blaise Pascal.

* 1 Pascal is equal to 1 Newton per square meter (1 N/m²).

So, if you see something measured in Pascals, it's referring to pressure.