Question

describe the steps used to separate a mixture of sugar sand and pebbles​

Answer 1

The sugar would dissolve in water. You could then pour off the solution and wash the remaining sand with a bit more water. Heat the water to evaporate it from the sugar, and the two are separated.

Because you have not altered the sand or the sugar in a chemical way (the sugar always remains as sugar, and is reclaimed in the same form), these were physical changes.

Answer 2

Answer:

first remove the pebbles with help of hand or tongs and then let the sand settle down through help of decantation and then finally evaporate to get sugar