Milk is composed of fats, proteins and amino acids which are subject to decay and breakdown from bacteria. As the bacteria breakdown the milk, they release waste products such as methane and ammonia (rotten milk smell) that are poisonous to humans, and some bacteria of those bacteria themselves are harmful to humans such botulism which is the most common source of food poisoning. Bacteria thrive in temperatures around 50-95 degrees. Refrigeration only slows the progress of the bacteria.
Yes. That is basic food safety.
no
Unrefrigerated pumpkin pie isn't safe because it has eggs and milk in it.
Yes it can spoil with out refrigerated.
It will depend on what they were made from and how/if they were wrapped up. Cake and bread go stale if left unwrapped on the counter, but can still be eaten for several days. Pancakes are pretty much the same.
Milk will go bad if mixed with an acidic liquid such as lemon juice, lime juice or vinegar.
the milk that has the closest experation date will go bad first.
No.
should be ok. milk unrefridgerated goes from 6-8 hours
Since cream cheese is made out of fresh cream I would treat it like milk. How long do you let your milk go without refrigeration?
It isn't safe to eat hot dogs that have gone unrefrigerated overnight.
If your milk is "slightly solid" it is spoiled.