pH lab

From this lab i learned quit a bit that i didn't know before. I learned that acids release hydrogen ions, and bases release hydroxide ions, and when they mix they make water. which is why when acids and bases mix, they get a pH level of somewhere around 7. 7 is the pH level of distilled water. The further down on the pH scale something gets, the more acidic it is. And the higher up means that it's a base. The lower the pH number means the more Hydrogen Ions are in it. And the higher means the more Hydroxide Ions. Even though i learned quite a bit from this lab there's still some i wish i know more about. For example i know that soda is acidic but i'm not sure how acidic. And I need to learn more about what it's okay for people to have and what exactly is too much of an acid or base for a human.