welcome,Reading And Vocabulary,Do you like scientific experiments? Have you ever done it by yourselves? Are you clear with the stages（阶段，时期） of a scientific experiment? What are they? And whats the right order of them?,stages of a scientific experiment,aim,method,result,conclusion,Passage A,Choose the best title for this passage. A. The Different User of Metals B. The Reaction of Metals C. The Reaction of Metals with Oxygen,Questions:,1.Which of the metals in the table reacts the most with oxygen and water? key: potassium, sodium, calcium. 2. What happens when you heat calcium in oxygen? key: It burns to form an oxide. 3. Which metals react with steam? key: magnesium, aluminium, zinc. 4. Does iron have a slow or fast reaction with steam? key: It has a slow reaction. 5. Does copper react with water? key: No, it doesnt.,Read the passage again and decide whether these statements are true (T) or false (F). 1). Different metals have different uses. 2).The reaction of metals with different substances is the same. 3). Magnesium can form an oxide when heated in oxygen. 4). Copper reacts most when heated in oxygen.,T,F,T,F,Passage B: A Simple Scientific Experiment,Read Passage B and fill in blanks:,to find out if iron rust 1) in dry air; 2) in air-free water; 3) in ordinary water.,Cotton wool,Test tube holder,Apparatus(设备，仪器),Clean iron nails,Test tubes,Oil,Bunsen burner,Passage B: A Simple Scientific Experiment,Read Passage B and fill in blanks:,to find out if iron rust 1) in dry air; 2) in air-free water; 3) in ordinary water.,3clean nails, test tubes, test tube holder, cotton wool, oil, Bunsen burner,1) Iron doesnt rust 2) Iron doesnt rust 3) Iron rust,1)Iron doesnt rust in dry air 2)Iron doesnt rust in air-free water 3)Iron rust in ordinary water,Complete the exercises on page 45,Complete the exercises on page 45,How can you do a scientific experiment successfully？,First, we need to have an _ and prepare _ for the experiment before we do the experiment. Second, we must use correct _ to do the experiment and watch carefully. Then we can get the _ and draw a _.,apparatus,aim,methods,result,conclusion,Listening And Writing,Listen to the conversation and fill in the blank Aim: To find out if there is a _ in weight when magnesium _ in air. Apparatus: magnesium, Bunsen burner, a b_, a crucible Method: First, put the magnesium in the _. Then, put the crucible on the balance and _ it. Next, _ the magnesium. Light the Bunsen burner and _ the crucible over it. Finally, weight the magnesium _. Result: It weighs a little _ than before. Conclusion: There is a change in weight when magnesium burns in air,change,burns,alance,crucible,weight,heat,hold,again,more,Thank you,