Do you have any idea for better collocation?
So I chose decided to study chemical engineering at the university to pursue my passion since at high school we just studied basic concepts.
Do you have any idea for better collocation?
So I chose decided to study chemical engineering at the university to pursue my passion since at high school we just studied basic concepts.
I believe basic concepts to be perhaps the most suitable and common collocation in that context.
Alternatives include fundamental concepts and the basics.
Furthermore, I think your sentence will read better as:
So I decided to study chemical engineering at the University in order to pursue my passion, since we only studied basic concepts in high school.