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How does chemical change occurred in sugar to change a beaker from white to black?
Wiki User
∙ 11y ago
At high temperature sugar is thermally degraded to brown caramel; further increase of temperature lead to to a carbonic residue or ash.
Wiki User
∙ 11y ago
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In a beaker sugar is dissolved in water and then the water is heated and evaporates The sugar is recovered and heat is again applied Vapor is released and the material in the beaker changes from?
In a beaker, sugar is dissolved in water, and then the water is heated and evaporates. The sugar is recovered, and heat is again applied. Vapor is released, and the material in the beaker changes from white to black. What must you know to determine if a chemical change occurred? CO2 (carbon dioxide) CuO (oxidized copper) H2O (distilled water) H2O2 (hydrogen peroxide) NaCl (sodium chloride)
Is sugar being heated to produce steam and a black solid a chemical change?
Yes is it a chemical change as the process is irreversible. Also its properties are being changed and it looks different physically which always means a chemical change has occurred or will occur if certain substances are put together.
How do new substances form?
New substances are formed, when a chemical reaction has occurred.. for example a banana turning black.
Is black smoke from a candle a chemical change?
yes.
When table sugar is heated to its melting point it bubbles and turns black When it cools it remains a black solid Describe the change as chemical or physical?
I'd say it's a chemical change, because it's obviously not a sugar anymore...
In a beaker sugar is dissolved in water and then the water is heated and evaporates The sugar is recovered and heat is again applied Vapor is released and the material in the beaker changes from?
In a beaker, sugar is dissolved in water, and then the water is heated and evaporates. The sugar is recovered, and heat is again applied. Vapor is released, and the material in the beaker changes from white to black. What must you know to determine if a chemical change occurred? CO2 (carbon dioxide) CuO (oxidized copper) H2O (distilled water) H2O2 (hydrogen peroxide) NaCl (sodium chloride)
Is sugar being heated to produce steam and a black solid a chemical change?
Yes is it a chemical change as the process is irreversible. Also its properties are being changed and it looks different physically which always means a chemical change has occurred or will occur if certain substances are put together.
Is black crust a physical or chemical change?
Chemical, the black spots are the compound silver sulfide.
When a black soot formed as a candle burns is it a chemical change?
Yes. That is a chemical change.
Black smoke from candle physical change or chemical change?
chemical change Madison and Kayla were here ;)
Is black tea a physical change or chemical change?
physical change
When glass turns black from fire is it a physical or chemical change?
chemical
How do new substances form?
New substances are formed, when a chemical reaction has occurred.. for example a banana turning black.
Is wood becoming charred and black from burning a chemical change?
yes charring of wood is chemical change
When a peeled banana turns black is a?
Chemical change
Is black smoke from a candle a chemical change?
yes.
Is black crystals of iodine turning into purple vapour of iodine a physical change or a chemical change?
if u heated them then its a physical change if u chucked another chemical on them its a chemical change if u did both then its a change of clothes
