Chemistry is the second and final extended play by South Korean duo Trouble Maker, which consists of 4Minute's Hyuna and Beast's Hyunseung.

It was released digitally on October 28, 2013 with the lead single "Now" (Korean: 내일은 없어; RR: Naeireun Eopseo; lit.

Jeff Benjamin of Billboard K-Town wrote that the video "feels like a concentrated effort to get Western attention".

He also said, "'Now' shows the two K-pop idols engaging in very un-idol-like behavior: smoking cigarettes, drinking beer, there's even an implied threesome with Hyunseung.

"[17] On November 3, 2013, Trouble Maker released an uncut version of the music video, which was twice as long as the original.