Pham Mai Phuong wins a gold medal at 2014 IChO. (Photo: VNA)

(VOVworld) – Vietnamese students won 2 gold medals and 2 silver medals at the 46th International Chemistry Olympiad (IChO) that closed in Hanoi on Monday. Both gold medals went to Hanoi - Amsterdam High School for the Gifted. Two silver medalists were from Hue National High School in the central province of Thua Thien-Hue and Tran Phu gifted high school in the northern city of Hai Phong.