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A simple scientific experiment高中英语必修一 Module 5 Reading翻译


A Simple Scientific Experiment
Below is a description of a simple scientific experiment. It shows us how iron reacts with air and with water. Aim: To find out if iron rusts (a) in dry air; (b) in water that has no air in it (air-free water); (c) in ordinary water.
Apparatus: 3 clean iron nails; test tubes; test tube holder; cotton wool; oil; Bunsen burner.
Iron in dry air
Method (1). Put some iron nails at the bottom of a test tube.
(2). Push some cotton wool down the tube.
(3). Leave the tube for one week.
Result: After one week, the nails have not rusted.
Conclusion :Iron does not rust in dry air.
Iron in air-free water
Method (1). Half-fill a test tube with water.
(2). Boil the water for three minutes. (This makes sure there is no air in the water.)
(3). Put two or three clean nails in the water.
(4). Add some oil to the water. This will keep air out of the water.
(5). Leave the tube for one week.
Result: The nails do not rust in the tube with air-free water.
Conclusion: Iron does not rust in air-free water.
Iron in ordinary water Method
(1). Half-fill a test tube with water and add two or three clean nails.
(2). Leave the tube for one week.
Result: The nails rust in the tube with ordinary water.
Conclusion :Iron rusts in ordinary water.
一个简单的科学实验
下面描述一个简单的科学实验,通过它来向我们展示铁如何与空气和水反应。
目的:寻找铁生锈的原因(a)在干燥的空气中(b)在无空气的水中(c)在普通的水中
器材:3个干净的铁钉、试管、试管架、棉花、油、本生灯
铁在干燥的空气中
方法:(1)放一些铁片在试管底部
(2)把一些棉花塞进试管中
(3)把试管静置一个星期
结果:一周后,铁没有生锈
结论:铁在干燥的空气中不会生锈
铁在无空气的水中
(1)往试管中装入一半的水
(2)把水煮沸3分钟(这是为了确定水中无空气)
(3)放2-3个干净的铁片在水中
(4)添一些油在水中,这样保持空气在水外
(5)把试管静置一个星期
结果:一周后,铁没有生锈
结论:铁在无空气的水中不会生锈
铁在普通的水中
(1)往试管中装入一半的水,在加入2-3个干净的铁片
(2)把试管静置一个星期
结果:一周后,铁生锈
结论:铁在普通的水中会生锈

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