Final answer:
Lemon juice is considered acidic because it has a pH typically between 2 and 3, which is below the neutral pH of 7.
Step-by-step explanation:
Lemon juice is acidic, based on its pH level. The pH scale ranges from 0 to 14, with 0 being the most acidic, 7 being neutral, and 14 being the most basic (or alkaline). Lemon juice has a pH that is typically less than 7, usually between 2 and 3, which clearly indicates that it is acidic.
Acidity and basicity are terms used to describe where a solution falls on the pH scale. For example, pure water with a pH of 7 is neutral, indicating that it is neither acidic nor basic. Milk of magnesia with a pH of 10.5 is basic and wine with a pH of 3.0 is acidic, similar to lemon juice.