True or false

The central core of an atom is called the hub.

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present

When would a bouncy ball have the most potential energy

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled