Chua competed only in the women's 50 m freestyle at the 2000 Summer Olympics in Sydney. She achieved a FINA B-cut of 27.16 from the Janet Evans Invitational in Los Angeles, California. She challenged seven other swimmers in heat four, including Russian import Yekaterina Tochenaya of Kyrgyzstan, and Yugoslavia's two-time Olympian Duška Radan. Chua faded down the stretch to a third seed in 27.66, exactly half a second (0.50) below her national record and an entry standard, and 0.78 seconds off a leading time set by Tochenaya. Chua failed to advance into the semifinals, as she placed fifty-second overall out of 74 swimmers in the prelims.