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课件网) Module 5 A Lesson In A Lab Reading a laboratory scientific experiments balance Bunsen burner test tube tongs crucible beaker & glass rod apparatus Potassium （钾） substances Sodium(钠) Calcium(钙) Magnesium(镁) Aluminium （铝） Zinc （锌） Iron （铁） Copper （铜） Listen and choose the best title The Different Uses of Metals The Reaction of Metals The Reaction of Metals with Oxygen 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. Iron reacts with cold water. 5. Copper reacts most when heated in oxygen. T F T F F skimming Which of the metals in the table reacts the most with oxygen and water What happens when you heat calcium in oxygen Which metals react with steam Does iron have a slow or fast reaction with steam Does copper react with water Careful reading ⒈ Which of the metals in the tables reacts the most with oxygen and water _____ ⒉ What happens when you heat calcium In oxygen _____ Potassium, calcium and sodium. It burns to form an oxide. Careful reading 3. Which metals react with steam _____ ⒋ Does iron have a slow or fast reaction with steam _____ ⒌ Does copper react with water _____ Magnesium, aluminium and zinc. It has a slow reaction. No, it doesn’t. How we can carry out a chemical experiment in a lab successfully And what is the correct order to describe a scientific experiment _____ _____ _____ aim method result conclusion Passage B _____ cotton wool nails water water water Iron does not rust. Iron does not rust. Iron rusts. Passage B:A Simple Scientific Experiment Activity 5 on page 46 1. In the first part of the experiment, the _____ is dry, not wet. 2. It shows that iron _____ when the air is dry. air does not rust 3. In the second part of the experiment, you must _____ the water to make sure there is no _____ in it. ⒋ You add _____ to the water because this keeps _____ out of it. ⒌ It shows that _____ does not rust in water that has no _____ in it boil air some oil air air nail Below is a description of a simple scientific _____, which shows us how ____ reacts with air and with water. The ___ of the experiment is to find out if iron ____ in dry air; in _____ water, in _____ water. After the different stages of the experiment, we can reach a _____ that iron does not rust in dry air or air-free water, but rusts in ordinary water. iron aim rusts air-free ordinary conclusion experiment Summary 1. Do you think it is easy or difficult for you to carry out a scientific experiment well And can you describe how to do it successfully in simple words 2. If you want to learn science subjects well, what qualities do you think you should have Why 3. Describe one scientific experiment you did that impressed you very much. Discussion
