Why does a substance change states?

Because the molecules in an object either expand when warm or contract if its cold

A substance changes states because, the molecules in a object has to spread out and move quickly when it's warmer and moves slower if the subtance is getting colder.

Nothing will delay it, but drinking some lemon (squeeze 3) would cut it, making it last a few days, but its not good to do that. won't hurt you but the next month will be more cramps.. take some advils with you on the trip