Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to over 2,000 colleges and universities.*Begin Free Trial
25 Sophia partners guarantee credit transfer.
221 Institutions have accepted or given pre-approval for credit transfer.
* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 20 of Sophia’s online courses. More than 2,000 colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.
13 What are transition metals and why are they so useful?
14 Why is copper such a useful metal?
15 Why are alloys more useful than pure metals?