🥔💧➡️⚫

#iodine test #starch test #potato starch #chemistry experiment #chemical indicator #blue-black reaction

🍚💧➡️⚫

#starch test #iodine test #rice starch #food science #chemical indicator #colorimetric test

🌽💧➡️⚫

#corn starch #iodine test #starch indicator #food chemistry #blue-black test