2006-08-05 01:27:36 · 5 answers · asked by Ro-Ann A 1 in Science & Mathematics ➔ Chemistry
because the heat caused the sugar structure to change.
2006-08-05 01:33:22 · answer #1 · answered by James Bond 5 · 0⤊ 0⤋
When you see the colour of table sugar (sucrose) change from a colourless melted liquid into a wonderful-smelling thick viscous brown liquid, you've just witnessed a caramelization reaction. Stripped down to the barebones, it means that the chemical structure of the sugar has changed.
What actually happens? Sucrose, or table sugar, is actually a dimer (combination of two molecules) of glucose and fructose. When you heat sucrose, it is first converted into "invert sugar", basically breaking the dimer down to its component glucose and fructose. Interestingly, the invert sugar is sweeter than regular sugar. Afterwards, a bunch of reactions (which are quite poorly understood) occurs that causes the polymerization of the sugars into longer chains. The caramelization process can actually produce hundreds, if not thousands of distinct chemical products from simple sucrose!!
2006-08-05 11:40:54 · answer #2 · answered by Strange Days 2 · 0⤊ 0⤋
Sugar is made up of carbon and hydrogen. During heating the change of colour is due to carbon getting heated.
VR
2006-08-05 08:34:10 · answer #3 · answered by sarayu 7 · 0⤊ 0⤋
Sugar is Carbohydrate. Heat and the molucular links melt and turns brown to black and then catches on fire.
2006-08-05 08:33:23 · answer #4 · answered by John Paul 7 · 0⤊ 0⤋
sugar melts or burns when you burn,you change in color
2006-08-05 08:31:33 · answer #5 · answered by garfyldrox 4 · 0⤊ 0⤋