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酸和碱是中学化学课中的常客。上一期我们了解了美国老师是如何向学生解释“酸”这一概念的。那么现在我们再来了解一下“碱”吧!Bases are one of the most com-mon types of chemical substances.Bas-es have many industrial and householduses.They react with many common ma-terials.Like acids,strong bases are al-
Acid and alkali are secondary school chemistry class regulars. In the last issue we learned how American teachers explain the concept of “acid” to students. So now we come to understand “Alkali”! Bases are one of the most com-mon types of chemical substances.Bas-es have many industrial and householduses. They react with many common materials .Like acids, strong bases are al-