If an egg is introduced to water that is cooler than the eggs temperature the membrane inside the egg will shrink allowing bacteria to enter.
how do the bacteria get into eggs? There are two ways this might happen: 1) Chicken poop gets on the shell of the egg. The bacteria pass through the pores and proliferate inside the egg. 2) An industrial egg-laying hen whose ovaries are contaminated with salmonella bacteria passes the bacteria along in the egg-formation process.
why does an egg float or sink in water
An egg will sink in water but will float in salt water. An egg will sink faster in hot water than it will in cold water.
A health issue associated with eggs is a low chance they may be contaminated by pathogenic bacteria like Salmonella enteritidis. This contamination may exist on the shell and get into the egg as it is opened or be in the egg initially.
It depends on the freshness of an egg.
NO! Bacteria in cooked eggs grows quickly!
Bad eggs don't sink they float.
The egg is kind of like a sealed plastic bag but air still needs to come through. So if it does sink and does not crack then it may have a minute or a few seconds to live.
The highest risk for contamination of an egg is Salmonella. The shell does protect against these organisms entering, but if it is cracked or highly contaminated it will not stop contamination. Washing the egg too much could also compromise the barrier causing contamination. If the egg is cooked properly, Salmonella contamination should not be a problem as the bacteria will be killed with sufficient heat.
An egg sinks if it is more dense than water.
yes
In a denser liquid.A raw egg will sink in fresh water, but float in salt water. It also depends on how fresh the egg is.Set an egg in cold water-If the egg stay at the bottom - it is fresh.If the egg is at an angle on the bottom - it is still fresh and good to eat.If the egg stands on its pointed end at the bottom - it is still safe to eat but best used for baking or boiled eggs.If the egg floats - it is best discarded.