In this type of conditionals, we can use "when" instead of "if"

Actually, in conditional sentences, we typically use "if" to introduce the condition. However, there are certain cases where "when" can be used instead of "if".

1. When the condition is certain or expected to happen in the future:

   • When you go to college, you will meet new people. This implies that going to college is a certain event that will happen in the future.

2. When the condition is a habitual or repeated action:

   • When I study in the library, I concentrate better. This implies that studying in the library is a habitual or repeated action.

3. When the condition is a general truth or a scientific fact:

   • When water boils, it turns into steam. This implies that the process of water boiling and turning into steam is a general truth or scientific fact.

In these cases, "when" is used to indicate that the condition will definitely happen, rather than something uncertain or hypothetical.