Which of these is an example of a physical change? 1.a banana ripening in air 2.hydrogen burning in the air 3.zinc reacting with an acid 4.liquid water turning into vapor

Alright my friend so let's put it this way A banana ripening is still a chemical change so we can throw that one out if hydrogen is burning it'll be a chemical zinc is reacting with an acid therefore making it a chemical so the best option will be that liquid water turning into vapor would be a physical change so 4. is your answer