Charlie is frying an egg in a pan located over a gas burner. He develops a model to determine the energy produced by the flame in the gas burner by calculating the energy absorbed by the egg. Which assumption will Charlie need to make in order for his model to be considered a
closed system?
A. Heat flows from the egg to the surroundings.
O
B. Heat flows from the pan to the surroundings.
O
C. No heat is lost from the flame or the egg to the surroundings.
OD. The egg receives heat from the flame and the surroundings.

A closed system is one in which there is no exchange of materials or energy with the surroundings hence the correct assumption is that "No heat is lost from the flame or the egg to the surroundings."

Another name for a closed system is an isolated system. In such system, there is exchange of material or energy between the system and the surroundings.

In this case, the system comprises of the pan and the eggs. If the system is to be a closed system then " No heat is lost from the flame or the egg to the surroundings."

Learn more; link

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).