Here are a few possible options: (my son was awarded one of these and used it at a “meets full need school” which eliminated his work-study, summer contribution)
http://www.acs.org/content/acs/en/funding-and-awards/scholarships.html
https://www.aps.org/programs/minorities/honors/ibm.cfm
http://www.actuarialfoundation.org/programs/actuarial/act-diversity.shtml
http://www.nacme.org/scholarships
My kiddos also used this program for app fee waivers, scholarship resources and other membership benefits ( no cost):
http://www.venturescholar.org/hs/index.html
“The Ventures Scholars Program is a national membership program designed to help underrepresented and first-generation college-bound students interested in pursuing math- and science-based careers link to information, resources, and opportunities that will help them successfully pursue their career goals.”
You do not need to be a URM AND a first gen, rather you can be one or the other and still qualify.
Hope this helps.
Kat