<p>Is it okay? I got carried away and used a pencil for the whole thing (even part B).</p>
<p>I think it is actually recommended that you use a pencil on the AP Chemistry Free Response portion. There are many calculations, so erasing your answers instead of having many smudges and cross-outs would be more convenient.</p>
<p>The back of the book said that pencil or pen may be used for the free response booklet, so I just used pencil for all of the questions</p>
<p>Oh,ok. Thanks for the confirmation,guys.</p>
<p>Yeah, I used pencil as well. It would be really messy if I crossed everything out.</p>