Before J. J. Thomson began gathering evidence about electrons in 1897, what did scientists know about atoms?

Scientists generally thought atoms were the smallest particles that could not be broken down any further.

Explanation: Trust me

i know insulin is primary but i dont know the others im sorry

explanation:

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.