Vietnamese students now enrolled in American high schools incur an extremely special need in English. After being taught subject matter disciplines in Vietnamese for many years, and while English is still a foreign language for them, these students are bound to go through two linguistic processes. First, while reading or sitting through lectures conducted in English, they mentally translate ideas into Vietnamese, then think in Vietnamese and reason the Vietnamese way to understand them. Second, when doing homework or trying to say something, they think first in Vietnamese before mentally translating their thoughts into English. To help overcome these and other obstacles an English-Vietnamese scientific terminology series has been produced. This document, the fourth in the series, presents an alphabetical list of chemistry terms in English with corresponding terms in Vietnamese. In the translation of the English terms into Vietnamese, existing Vietnamese equivalents were kept and words based on Sino-Vietnamese linguistic root or outright phonetic transcription were adopted. The document is suitable for high school and college students and for individuals training for paramedical and laboratory occupations. (JN)