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6.2.b　Effects of calcium oxide for adherences to a glass wall regarding the iron carbide bubble
　As shown in Fig.34 (a)〜(d), bubbles are produced on a glass wall. Here, calcium oxide powder (CaO) was added into the carbonated water that was mixed with iron powder.

　 　　 　
　((a) after 7 hours 45 minutes　　　　　(b) after 8 hours 43 minutes

　 　　
(c) after 23 hours (front view)　　　　　(d)　after 23 hours (side view)
Fig.34 Bubbles on a glass wall. Here, CaO (2g) was added into the carbonated water (50cc) that was mixed with iron (5g).


6.3 The substance that was made from the iron carbide bubble on the glass wall off water
6.3.a　The substances on the glass wall off water that was made from the carbonated water that was mixed with powder of iron and CaCO3
　As shown in Fig.35, the substance on the glass wall of the upper part from the surface of the water increases by progress of time.

　　　 　　　　
Fig.35　Substances on the glass wall off water at 3 days after. Here, powder of CaCO3 (5g) and iron (5g) were added into the carbonated water (50cc)


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