A teacher heated a sugar cube and it melts to a liquid. Which one of these stays the same ?

Question

a) molecular motion
b) average denstiy
c) the positions of molecules relative to one another
d) number of chemical bond between te atom

Answer 1

None.
Molecules speed up.
The sugar caramelizes, (oxidizes).
As the process occurs, volatile chemicals are released producing the characteristic caramel flavor. If a sucrose solution is left in a sand bath over night, the sucrose (once the water has evaporated) will caramelize.

When caramelization involves sucrose, it adds one water molecule to sucrose to split it apart to form fructose and glucose, increasing the mass of the sugar (caramel).

Answer 2

-molecules will speed up
-the density will decrease because the volume will increase and the mass will stay the same.
The position of the molecules will spead apart and be able to move past each other
So the answer is D. Sugar will stay sugar.

Answer 3

coffee