Uncountable: When referring to soap as a general substance, it's uncountable.
* Example: "There's not enough soap in the dispenser."
Countable: When referring to individual bars or pieces of soap, it's countable.
* Example: "I bought three bars of soap at the store."
Here's a simple way to remember:
* Uncountable: Talking about soap as a general material
* Countable: Talking about specific pieces or bars of soap