礼堂里坐着各年级的同学,一双双好奇的眼睛盯着会场正中。突然,爆竹齐鸣,在五彩缤纷的礼花丛中,一张普通的白纸竟然变为衬有蓝天、绿草的图画;温顺的小猎狗,倾刻间变成凶猛的老虎…… 这不是魔术表演,而是我校举办的一场别开生面的“化学晚会”。 晚会开始后,同学们各显身手,分别表演趣味化学实验。初三的一位同学手提装满水的茶壶,另一位拿着四只干净的杯子,幽默地说:“我们的校长最辛苦,请您喝杯牛奶吧!”话音刚落,满满的一杯“牛奶”立刻出现在校长面前,“不过,这种 Sitting in the auditorium of all grades of students, a pair of curious eyes staring at the middle of the venue. Suddenly, the firecrackers burst into flame. In the colorful fireworks, an ordinary piece of white paper turned into a picture of blue sky and green grass. The meek beagle dog turned into a ferocious tiger. This is not a magic show , But our school held a special “chemistry party.” After the party started, students showed their talents and performed interesting chemistry experiments respectively. One classmate on the third day hand-held a water-filled teapot and the other held four clean cups and said in a humorous way: “Our headmaster is the toughest. Please have a glass of milk!” A cup of “milk” immediately appeared in front of the principal, "However, this