Answer:
1.- If you change the order of the elements, the result does not change ( math)
2.- Water can change its state if you change its temperature (science)
3.- Unless you discover the value of x, you can't solve an equation (math)
4.- Electricity can be transported if you have a viable conductor ( science)
Step-by-step explanation:
Zero conditional is used to talk about things that always happen in the same way or that are permanently true. The grammatical structure is conformed of two clauses, the if-clause and the main clause they represent different aspects of the conditional being one precisely the condition and the other the result of that condition. The if clause can also use the word "when" instead of "if" since we are talking about something real that always occurs in the same way.