苏教版《实验化学(选修)》在“牙膏和火柴头中某些成分的检验”课题中利用火柴头的燃烧实验检验硫元素。笔者在开展含硫火柴头燃烧实验的教学时,基于操作安全简捷、药品用量少、实验绿色化等角度的考量,对该定性实验进行了再创新。同时利用创新后实验密闭性好的优点,进一步定量测定火柴头中硫元素的质量。一、实验目的1.通过检验火柴头燃烧产生的SO2确定火柴头中含有硫元素。2.在用过量的高锰酸钾溶液吸收SO2后,再用 The Soviet version of “Experimental Chemistry (elective)” in the “toothpaste and match head of certain components of the test,” the use of match head combustion test sulfur element. When carrying out the teaching of sulfur-containing match-head combustion experiment, the author re-established the qualitative experiment based on the consideration of simple and safe operation, less dosage of medicine and green experiment. In the meantime, the quality of sulfur element in match head was further quantitatively determined by taking advantage of the good confinement of experiment after innovation. First, the purpose of the experiment 1. Through the test match head SO2 to determine the match head contains sulfur. 2. After using excess potassium permanganate solution to absorb SO2, reuse