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At first it is a physical reaction. If you keep heating it it will undergo a chemical change. In fact, once it melts you have altered its chemical makeup (melting by itself is a physical change but in sugar that also marks a chemical change). Heat more and it undergoes another chemical change and goes from clear to brown another chemical change takes places. Eventually you can drive off (almost) all but the carbon atoms.
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Is heating KClO3 and MnO2 a chemical or physical change?
Heating KClO3 and MnO2 to form KCl and MnO2 is a chemical change as new substances are being produced.
Is heating ammonium bicarbonate a physical or chemical change?
Heating is a physical process but thermal decomposition is a chemical process.
Is heating of ammonium chloride in a test tube a physical or chemical change?
This is a chemical change (thermal decomposition).
Is heating water in a pan chemical change?
Heating water in a pan is a physical change, not a chemical change. The heat energy causes the water molecules to gain kinetic energy, leading to an increase in temperature and a phase change from liquid to gas (steam). The chemical composition of water remains the same.
Is heating a cup of tea a chemical change?
Heating a cup of tea is a physical change, not a chemical change. The heat causes the molecules in the tea to move faster, but the chemical composition of the tea remains the same.
Is heating an iron nail a physical or chemical change?
Heating is a physical change.
Is sucrose dissolving a chemical change?
No, it is a physical change because the molecules of sucrose are not altered, just suspended in a solvent.
Is heating a glass a chemical or physical change?
Heating is a physical process.
Heating a frying pan is chemical or physical change?
Heating a frying pan is a physical change. A chemical change is when you change the chemical properties. Heating the pan is only changing the temperature of the pan not the chemical make up.
Is heating a glass tubing a physical or chemical change?
Heating is a physical process.
Is a cooked hot dog physical or chemical change?
CHEMICAL:)
Is the heating of iodine crystals a chemical or physical change?
It is a physical change (sublimation).
Is heating a chemical or physical change?
Heating a substance can result in either a physical change or a chemical change. A physical change does not alter the substance's composition, such as melting or boiling, while a chemical change leads to the formation of new substances with different properties, such as burning or baking.
Is heating a jelly physical change?
Heating is a physical process but during heating some chemical reactions are possible.
Is heating mercuric oxide a physical or chemical change?
This is a chemical reaction; oxygen is released.
Is heating chocolate over boiling water a physical or chemical change?
physical change
Can a physical change become a chemical change?
A lot of chemical reactions are initiated by physical changes - specifically, heating something.
