外研版英语必修一Module5Readingandvocabulary课件(2)

Module 5 A lesson in a lab 夏季出汗需多补钾 香蕉富含有钾potassium 钾 new words sodium copper(铜) magnesium aluminium（铝） Iron (铁) zinc（锌） calcium(钙) Fast reading • Read Passage A and choose the best title a. The Different Uses of Metals b. The Reaction of Metals c. The Reaction of Metals with Oxygen Read Passage A carefully, answer questions. 1. Which of the metals in the table reacts the most with oxygen and water? 2. What happens when you heat calcium in oxygen? 3. Which metals react with steam? 4. Does iron have a slow or fast reaction with steam? 5. Does copper react with water? Careful reading 1. Which of the metals in the table reacts the most with oxygen and water? Potassium, sodium and calcium. 2. What happens when you heat calcium in oxygen? It burns to form an oxide. 3. Which metals react with steam? Magnesium, aluminium and zinc. 4. Does iron have a slow or fast reaction with steam? It has a slow reaction. 5. Does copper react with water? No, it doesn’t. • Read Passage B carefully and fill in the table. Passage B Fill in the table. Cotton wool water water nails water Iron does not rust Iron does not rust Iron rusts Language points 1. put …in order 把……有序排列，使……整齐 Books should be __________ (摆放整齐) again after you have finished reading them. 2. add…to… 把……加到…… add to 增加，增添 add up 把……加起来 add up to 总共是，总计为 ⑴The bad weather only _______ our difficulties. ⑵ _______ your scores and we will see who won. ⑶ The numbers _________ exactly 100. added to Add up add up to put in order Learn and act Homework • Prepare a report on a simple scientific experiment after class.