Calcium Reacts with Water

This is part of a demonstration series I preform where we compare the reactivities of some alkaline earth and alkali metals to one another by reacting each with water.

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[AtDeathsDoor98]

What would happen if you held a flame near the top where the bubbles pop and the gas is given off?

[mrericsully]

@AtDeathsDoor98 The hydrogen gas will burn. If this is done after the calcium begins floating [after it reacts for a while it shrinks in size as some if it is reacted [becoming insoluble calcium hydroxide that is temporarily suspended, but will settle out and sink to the bottom]] the calcium can also burn and add an orange color to the flame. The hydrogen gas can also be trapped and burned separately.

[MegaMusicLover22]

when the reaction happenes... id water vapour given off?

PLZ REPLY ASAP- NEED FOR A LAB REPORT

[mrericsully]

@MegaMusicLover22 No, I say it in the video at 0:39.

[jokerc110]

I have a sort of funny question you could say...so if you decided to manufacture cookware with calcium metal instead of aluminum in order for dietary benefits ,it would be a bad idea based on this reaction ...correct?

[mrericsully]

@jokerc110 Yes a bad idea, not only because of this reaction, but also because the by-product is very basic [alkaline].

[msduckfuck]

calcium metal its self burns forming CaO

[Irimsadiq]

thanks, really helpful for my chemistry exam :)

[wb5rue]

It is quite exothermic

[mrericsully]

@xxbignolanxx The smell is most likely from the H2 although I wouldn't classify it as toxic- certainly breathing just H2 is a problem, but that's true for any gas that is not air or oxygen. Now H2 is very reactive but that is different.