What is the difference between "ganz" and "alles"?

Question

Does ganz mean the whole of something and alles mean all the constituent parts?

The whole of Germany. => ganz

Have we got everything? => alles

Answer 1

"Ganz" means "the whole". The entirety of some single entity: "ganz Deutschland": the whole country of Germany.

"Alles" means "all" in the sense that it's about every element of some group: "alle Deutschen": every single person of German nationality.

Answer 2

Ganz means "whole" and refers to "completeness." "Ganz Deutschland," the "whole" (entire, complete) country of Germany,

Alles means "all" and refers to a "count." "Alle Leute sind hier.": every (single, previously ennumerated) person is here.

Answer 3

In singular: ganz (all, whole, entire, complete): preferred for singular items

Hast du die ganze Pizza gegessen?

Das ist meine ganze Familie.

Wir haben nicht den ganzen Film gesehen.

In plural: if there are multiples of something, use “all”:

Alle Kinder wollen Süßigkeiten.

Kennt ihr alle meine Freunde?