If I make a bracha on an apple and I have intention only for that particular piece of fruit, would I need to make a new bracha if I later decided I want to eat another piece of fruit? Also, does the bracha over an apple also cover grapes, considering the bracha achrona is diffenet. Regards

Shalom, Thank you for your question. If a person said a blessing on an apple with the specific intent to only eat that apple, then a new blessing is indeed needed if one latter changes their mind and decides to eat another apple. For this reason, and in order not to cause unnecessary blessings, one should train oneself to always have "open-ended" intent when saying a blessing, that it should include everything that one may end up wanting to eat. If one wants to eat grapes and an apple, one should say the blessing over the grapes (as they are more important) and this blessing will cover the apple also, even though they have different after blessings. I hope this is a help to you.