Question

why do you think vinegar is used in so many experiments for chemical changes? it is cheaper than water. it is less reactive than water. it is a highly reactive acid. its valence electrons are full.

Explanation:

Vinegar is acetic - acid based and is a reactive substance, which makes it useful in chemical - change experiments. Cost is not the main reason, it is more reactive than water, and its valence electrons are not full.

Answer:

It is a highly reactive acid.