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Teaching important points 1. Name some sources of sulfur. 2. Name the use of sulfur in the manufacture of sulfuric acid. 3. Describe the manufacture of sulfuric acid by the Contact process ,including essential condition and reactions. Teaching difficult points 1. Name the use of sulfur in the manufacture of sulfuric acid. 2. Describe the manufacture of sulfuric acid by the Contact process ,including essential condition and reactions. The teaching method In this lesson, we will study independently, and the students will follow the guidance of the teachers. sulfur Show the students what you need to know in this lesson on the blackboard. 1.Name the use of sulfur in the manufacture of sulfuric acid. 2.Describe the manufacture of sulfuric acid by the Contact process ,including essential condition and reactions. Write the professional words that students need to master in this lesson. Contact process接触法 Frascal process弗莱什采磁法 Trioxide 三氧化物 Reversible 可逆的 Dilute稀释 Compound合成 Bleach使漂白 Dehydrating脱水剂 Oxidising agent氧化剂 Unreact未反应的
“Sulfur plays an important role in our lives, so how do you know how to get sulfur? In other words, where is sulfur in nature?” “Yes, there's sulfur in the crater.However, the sulfur in the crater is not enough for people to use.Where else can we get sulfur, except for the sulfur from volcanic eruptions?” “Yes,you are right we have a lot of sulfur in the ground .So how do we get the sulfur out of the ground? Pleaseinvited to read the 238-239 pages of the textbook in group, after the discussion and summary, please explain it to use! How do you get sulfur out of the ground?” After ten minutes, the student will answer the question. “Ok ,Now everyone can understand the source of sulfur, and we can find out by reading the textbook,Sulfur is an important raw material in our industrial production.” “Now everybody read the textbook carefully for 240 pages ,figure 9.20 to learn the manufacture of sulfuric acid by the Contact process ,including essential condition and reactions.Then please work in group and draw our own factory according to the principle of the book ,and the application of sulfur in production should be reflected in the picture.Please pay attention ,what shall we think about in the industrial production!”(suggested that students should pay attention to the recycling of waste gas and protect the environment.) In group units, let students show the factory they designed.Describe the manufacture of sulfuric acid by the Contact process ,including essential condition and reactions. Then put picture on the blackboard and summarize . “Okay, we're coming to the end of this video.Let us review what we leaned in this lesson .” Ask the students to answer the questions presented before class. “Let us read the key words of this lesson together .” The teacher take the lead . “Ok,so that is it for this class ,so you have to remember to review after class . |
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