Which is a chemical change, water boiling, wood burning, glass breaking, ice melting, or molding iron ?

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

Which position represents spring in the southern hemisphere? a) b) c) d)

Which of these is an intensive property of a substance