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What happen if we heat the salt?
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Topic: What happen if we heat the salt? (Read 4185 times)
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restuip
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What happen if we heat the salt?
«
on:
October 05, 2011, 08:46:04 AM »
Ok , Hi everyone,
i've doing research with salt, but i have no idea (another HW).
the first experiment, i heat the salt and it's changes color into brown.
the second one, nothing happen
are someone can lecture me
?
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ATMyller
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Re: What happen if we heat the salt?
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Reply #1 on:
October 06, 2011, 03:11:11 AM »
What salt was it? NaCl or something else? Was the pot you heated the salt in clean, if not the first colour change could be due to contaminants mixing with the salt. e.g. frying pans can be cleaned by heating some NaCl on them.
The lack of brown colour in the second heating is most likely caused by the first heating that removed all the dirt from the heating pot.
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Chemists do it periodically on table.
restuip
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Re: What happen if we heat the salt?
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Reply #2 on:
October 06, 2011, 10:19:27 AM »
yep salt is (NaCl)
, woow , today i do the experiment again, and yep the color is from the frying pan
but , i realize my fire getting bigger by itself, while heating the salt.
Any ideas?
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vmelkon
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Re: What happen if we heat the salt?
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October 11, 2011, 06:48:11 PM »
It gives the appearance of getting bigger because the flame carries some of the sodium and chlorine and excites the atoms. Sodium emits its yellow light. I don't know about chlorine but probably it emits its own emission lines.
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What happen if we heat the salt?