英语必修1外研版Module5新课改系列PPT-Reading

Complete the passage with proper
words according to Passage A and B. It is hard to think of a world without metals. Different metals have different uses, for example, iron can be used in
We can reach a conclusion that it is important for us to read books.
It is our aim to build up a harmonious society.
It is a piece of electrical equipment.
The stone contains potassium.
sodium
calcium
magnesium
The wheel is made of aluminum.
zinc
oxide
Nails are easy to rust in the damp air.
Water boils at 100 °C.
On the other hand, if it is put together with water or _____, steam there will be a
______ partial reaction. Next let’s do an __________ experiment to support the above. First, get a test tube filled with water and put
4. You add _________ some oil to the water
because this keeps ____ air out of it.
5. It shows that ____ nail does not rust in
water that has no ____ air in it.
Passage A
Read the passage as quickly as you
can and choose the best title for it. The Different Uses of Metals The Reaction of Metals The Reaction of Metals with Oxygen
Passage B
Read the passage and fill in the chart.
Iron in dry air Stage A (starting experiment)
cotton wool
Iron in air-free water
water
Iron in 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.
water
Stage B (1 week later) Stage C (Result)
water
nails
Iron does not rust
Iron does not rust
Iron rusts
Read the passage again and complete the sentences. 1. In the first part of the experiment, the ___ air is dry, not wet. 2. It shows that iron ___________ does not rust when the air is dry. 3. In the second part of the experiment, you must ____ boil the water to make sure there is no ____ air in it.
________ electrical equipment. But above all we should know whether it will react ____ under
different conditions. Otherwise it will keep the equipment from working well. As we all know, if iron is heated in oxygen, it will react slowly but will not form an _____. oxide
it over the _____________ ___ for Bunsen burner to boil
three minutes.
Then put three or four clean nails in the water with some oil added to it and leave the tube for one week. What happens? The iron does not ____ rust in airfree water. Another experiment, if you put the nails in the tube with the air in it for one week, then what happens? Iron rusts in ordinary _______ water.
Read the passage again and answer the following questions: 1. Which of the metals in the table reacts the most with oxygen and water? Potassium, calcium and sodium. 2. What happens when you heat calcium in oxygen? It burns to form an oxide.