How much metal do you eat a day? Well, if you're fit and healthy you're almost certainly eating quite a lot of iron. It might seem weird to be eating iron, which is after all the same material that is used for making nails and airplanes. Nevertheless, it is essential to carrying oxygen from your lungs and without it you'd have some serious health problems.
One of the best sources of iron is from corn flakes. In fact if you look at the ingredients of a corn flakes box you'll see that iron is listed as an ingredient. In today's experiment you will see for yourself that the iron that you eat is the same as the iron found in nails and planes.
What you will need: iron fortified corn flakes, a zipper lock bag, water and a strong magnet.
你一天吃進多少金屬？唔，如果你身強體壯，那你肯定吃了不少鐵質。「吃鐵」聽起來可能有點奇怪，畢竟鐵是用來造飛機和釘子的材料。然而，它卻是幫助肺部運送氧氣的基本要素，人體中若少了鐵質，健康肯定亮起紅燈。
玉米片是攝取鐵質的最佳來源之一。事實上，如果你仔細閱讀玉米片外包裝上標示的成份，就會發現其中也包含鐵質。今天的實驗中，你將親眼見證你吃進肚子裡的鐵質，就跟用來做釘子和飛機的鐵一樣。
實驗所需：強化鐵質的玉米片、一個密封夾鍊袋、水和一個強力磁鐵。
Methodology 方法
Step 1: Take the zipper lock bag and half fill it with water. Next add a cupful of corn flakes to the water. The idea is to make the cereal dissolve into a mushy fluid, so it helps if you use warm water. Keep squeezing the bag until the cereal has become a thick liquid. It might help if you leave it to dissolve for ten minutes.
Step 2: Take your magnet and press it to the side of the bag. The idea is to attract iron to the magnet, so slowly move the magnet round the bag and mix the cereal mush at the same time.
Step 3: Take a close look at your magnet. You should notice some tiny specs of iron attached to it. Continue to drag the magnet around the bag until the iron has grouped together. Open the bag and carefully slide the magnet to the top and try to remove the iron. Congratulations - now you know that there is real iron in your breakfast!
步驟一：將密封夾鍊袋裝水至半滿，接著將滿滿一杯的玉米片加入水中，這是為了要讓玉米片溶解成糊狀，因此使用溫開水會有助實驗。持續擰壓密封袋，直到玉米片變成黏稠的液體。你可以先將其靜置十分鐘，這樣會有助於玉米片溶解。
步驟二：將準備好的磁鐵緊貼住袋面，這是為了要把鐵質吸引到磁鐵上，所以你的磁鐵必須慢慢地在袋面上四處移動，同時繼續攪混糊狀的玉米片。
步驟三：仔細看看磁鐵。你應該會發現有些微小的鐵片吸附在磁鐵上。繼續在沿著袋面移動磁鐵，直到袋中的鐵質都被吸在一起為止。接著，打開密封袋，小心地將磁鐵移到袋口，將鐵質取下。恭喜！現在你知道你的早餐裡真的含鐵了！
Explanation實驗原理
As we mentioned earlier, iron is essential to carrying oxygen from your lungs. Some cereal manufacturers add extra iron to their products in a process known as fortification, but many nutritionists doubt if our bodies can actually utilize iron in this form. (John phillips, staff writer)
正如前面所提到的，鐵質是肺部運輸氧氣不可或缺的重要功臣。有些玉米片廠商會利用「強化程序」在產品中額外添加鐵質，但許多營養師對這類型鐵質是否能被人體吸收利用抱持懷疑的態度。 （翻譯：袁星塵）
Vocabulary 今日單字
1. iron n.
鐵 (tie3)，鐵質 (tie3 zhi2)
2. oxygen n.
氧氣 (yang3 qi4)
3. ingredient n.
原料 (yuan2 liao4)
4. dissolve v.i./v.t.
溶解 (rong2 jie3)
5. manufacturer n.
廠商 (chang3 shang1)
6. nutritionist n.
營養學家 (ying2 yang3 xue2 jia1)
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