高中英語module5alessoninalab第三課時課件外研版必修1-展示頁
2024-11-29 23:09本頁面
【正文】 learn from Passage A? It is very important to know___ __________________________. It is very useful in our daily life. metals can react with different substances how How many stages are there in a scientific experiment report Passage B 2020/12/24 Iron in dry air Iron in airfree water Iron in ordinary water Use of cotton wool ______________ Use of oil ________________________ Why it rusts ______________ → cotton wool ② nails → ___ → → → → → ____ ___ ___ ____ ordinary water rusty nails oil water Keep the nails dry Keep air out of the water Air in the water ① ④ ③ ⑤ ⑥ ⑧ ⑦ nails 2020/12/24 Conclusion Iron rusts in____________. Iron doesn’ t rust in _____ and___________ ordinary water dry air airfree water . 2020/12/24 ① ② ① ② ③ ④ ⑤ ⑥ halffill …with.. boil … put … in… add …to … leave … result Observe the following experiment carefully and then write down an experiment report Aim Apparatus Method Result Conclusion to find out if potassium reacts with cold water. a container, cold water, potassium, filter paper（濾紙 ), a pair of tweezers(鑷子） (1)Halffill the container with cold water. (2)Take a piece of potassium out of the oil. (3)Dry the potasium with the paper. (4)Put the potassium int
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