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| Subject:
Molecular change
Category: Science > Chemistry Asked by: mattka-ga List Price: $10.00 |
Posted:
29 Nov 2005 08:50 PST
Expires: 06 Dec 2005 06:50 PST Question ID: 599010 |
Sugar is a compound that contains C, H, and O. If sugar is heated in a flame, it will smoke and turn black. Molecularly, what has happened? What is the black substance? |
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| Subject:
Re: Molecular change
From: till-ga on 29 Nov 2005 09:57 PST |
Rather than posting an answer to a homework question let me give you some hints that will be helpful: What color does Hydrogen have ? What color does Oxygen have ? Is any of them black ? Are organic materials heat resistant to big heat ? till-ga |
| Subject:
Re: Molecular change
From: wizard4u-ga on 29 Nov 2005 23:07 PST |
IM A RESEARCHER IN BIOTECHNOLOGY .Many people wonder why sugar gets black when heated the process which u call it as charring. The black stuff is called burnt sugar! But seriously, this is what happens when you heat or burn things that contain carbon. It reacts with oxygen and "oxidizes" (burns). The black stuff itself is mainly carbon. it is like soot inside a chimney www.casamba.com/viewExpert. asp?CatID=1117&conMemID=107440 |
| Subject:
Re: Molecular change
From: knickers-ga on 30 Nov 2005 05:33 PST |
Give it enough heat and some more oxygen and it will burn away completely as the carbon residue will eventually become CO2 |
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