If you mix red and yellow, you get orange - Se você misturar vermelho com amarelo, terá o laranja.
If A happens, B happens.
The zero conditional is used to describe things that are generally true (e.g. facts) and things that often happen (e.g. routines). It is not used to talk about specific instances.
If/when + simple present, simple present.
In the case of things that are generally true, you can usually use ‘when’ instead of ‘if’ without changing the meaning.
|Basic overview of how to construct and use the zero conditional.||Wall Street English|