No. Bread is not kosher for Passover. (However, unless it has any "weird ingredients" like bacon fat or violates the rules and chadash/yashan grain, bread is kosher for all times other than Passover.)
Anything with wheat that has been left with water or yeast for over 18 minutes is considered CHAMETZ(not allowed on passover according to orthodox jews.)
They have to shop for Kosher for Passover foods and clean their homes of ALL regular bread and bread products.
Eggs, they also eat unleavened bread (bread without yeast)
It depends on the type of flour. Potato flour, alternately called potato starch is fine for Passover. Flour made from the 5 prohibited grains (wheat, oat, spelt, barley, and rye) is not allowed.
As soon a passover ends, leavened foods are again permissible, subject to other general kosher laws.
It would have to be certified kosher for Passover.
Jews prepare for Pesach (Passover) by cleaning the home and removing all leavening (bread, cakes, cookies, pasta, and some other things). Kosher-for-Passover foods are bought, including unleavened bread called Matzoh.
The label has to say "Kosher for Passover"
Yes, only if they are specifically certified kosher for passover. You can find kosher for Passover olives at any Jewish supermarket
Any food that is certified kosher for Passover. Instead of bread, matzoh is eaten.
It can be, it would require a valid Passover hechsher.
Yes, it can be since it is made from wine, which can be Kosher for passover if created under appropriate supervision. The bottle would require a kosher for Passover hechsher.
If you were able to find corn vinegar that is certified kosher for Passover, it would be kitniyot which means that the majority of Ashkenazi Jews would not use it.