Is melting a sugar cube a chemical change?

Answer 1

Burning or oxidization is always a chemical change. The process takes in Oxygen and Sugar and outputs different compounds including water, carbon dioxide, carbon monoxide, and other carbon residue.

Answer 2

Because scorching something cannot be reversed, and a chemical change is a change that cannot be reversed. If you were just putting sugar into water, you could get the sugar back to its original state by evaporating the water, and the sugar would stay at the bottom of the glass. That would be a physical change because you can reverse the change.

If you scorch sugar, you cannot make it un-scorched. It cannot be reversed. It is a chemical change.

Answer 3

Melting a sugar cube is a physical change because the sugar molecules do not transform into a different substance when heated, but only change from a solid to a liquid state. If the melted sugar were to further undergo a chemical change, such as caramelization or burning, then it would be considered a chemical change.

Answer 4

melting sugar isn't a chemical change, its a physical change.it only becomes a chemical change if it is burnt because the energy from the fire brakes down the chemical bonds

Answer 5

If the temperature is below the decomposition temperature, then melting a physical change not chemical as the liquid sugar (or molten sugar) can be solidified again.

Answer 6

Melting a sugar cube is a physical change because the substance is still sugar. Burning a sugar cube would be a chemical change because it activates a chemical reaction.

Answer 7

It is a chemical change because its still sugar its not being changed or transformed