Normally, frozen vegetables are not thawed first but are cooked from frozen.
Food which has been cooked can be frozen, even if it was frozen prior to cooking. BUT Frozen food which has been thawed, but not cooked, should never be re-frozen. Nor should food which was cooked, frozen and thawed.
No they can not ! not any food that have been defrosted can be re-frosted because of Bactria and germs !If they've been kept refrigerated and well sealed they can be refrozen.
It is safe to eat, and it won't even taste worse - depending on how long it was initially thawed.
Provided they haven't been sitting around at room temperature for awhile you should be fine.
If it is fully thawed I would go ahead, let it rise and bake it. It is not good to re freeze anything.
Thaw = to no longer be frozen Thawed state is the state an object is in when it no longer is frozen. (it might still be cold but should not have any frozen parts, even on the inside)
Any liquid or solid shrinks when frozen; the molecules contract. Molecules expand when thawed.
No, frozen is frozen. But you can refreeze something that has been thawed. You can refreeze thawed meat long as there are still ice crystals on it. Once completely thawed then you need to cook it first then refreeze. This applies to solid pieces only, ground meat once more than half thawed needs to be cooked first then refrozen always.
When it is not longer frozen!
It is generally not recommended to re-freeze anything that has been thawed out.
Once frozen, meat should not be refrozen without being cooked first. So if you have thawed 2 pounds of ground beef and then you bake a meatloaf with it, then you can re-freeze the meatloaf. But don't re-freeze the raw hamburger.