Yesterday in science we did this experiment where we got 3 nails 1 nail was sanded then glazed in Vaseline , 1 nail sanded but nothing was added to it then the last one was just a plane nail with Vaseline on it. then we put all 3 of the nails in copper sulphate to see what would happening
Today we made carbon dioxide gas by heating the calcium carbonate and held a burning a splint at the mouth of test tube,the flame went out. This proves that carbon dioxide gas was given off
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