What distinguishes a substance from a mixture? a) samples of the same substance can have different intensive properties. b) mixtures are groupings of elements, and compounds are not. c)substances are compounds, and mixtures are not. d) mixtures can be separated physically, while compounds cannot.

The main difference between a mixture and compound is that Mixtures can be separated physically, while compounds cannot.

Mixtures are physically combined things that can be broken down back into their original components. (Think of Salad)

While substances have a chemical composition that can not be physically separated

i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year