作者yehbell (Bell)
看板NTUF-97
標題[討論] 普化習題(老師沒說要寫的)
時間Sat Oct 4 09:49:59 2008
大家呀
我來發文了
嗯 相信大家都沒寫吧
我先放幾題(課本後面沒有寫答案 老師也沒說要寫的)
由於是我自己寫的 如果有錯誤 歡迎給予指正
感恩~
Ch1.
1.59
First, put a magnet into the mixture so as to attract the iron filings out.
When all the iron filings are out of the mixture, we then add some water.
Next, prepare a funnel with filter paper, and make sure they can stick to
each other. Third, drop the mixture, sand with salts added to water into the funnel.
After that, sand will leave on the filter paper; therefore, we can get salty water.
Fifth, put the salty water on the stove to boil the water. Once the water evaporates,
we can finally gain salt.
好吧 由於時間關係 我先放這一題
希望大家別拿他取笑我
感謝!
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