Chemistry

Question

Am I allowed to study for a chemistry test on shabbos? The m'b siman 307 sif katan 65 says we're noheg to allow learning "divrei chocmos" although it is not sugested. Is this the halacha, if it is does that apply to a test also or is there a problem of hachono(R' Shlomo Zalmn zt'l was mesupak), and does chemistry fall under divrei chochmo if it's not learned for the sake of gaining knowledge? Thank you.