Water not listed in ingredients

If one of the 5 species of grain (or it’s a majority kitniyot species) is listed in the ingredients, but water is not one of the ingredients in a product, would the product be considered chametz (or kitniyot that’s prohibited to eat)?

Keeping cookies and cakes

Can I keep cookies or cakes if I know that when I made them, they were never left to sit unworked for 18 minutes between adding water and I putting them in the oven?

Keeping flour

Is wheat grains or flour wetted in the storage process to prevent fires? Is the amount of water used more than just a sprinkle?