How you could separate and collect the first substance from the mixture: i) Sand and sugar ii) Ethanol and water Please helppp

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

In which environment would primary succession occur? a forest with a few remaining trees after a recent wildfire an area of exposed rock after a glacier melts away beach that is exposed to the air at low tide an abandoned baseball field in a small town

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.