A student frying an egg in a pan 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 the student need to make in order for his model to be considered a closed system? The egg receives heat from the flame and the surroundings
Heat flows from the egg to the surroundings
No heat is lost from the flame or the egg to the surroundings
heat flows from the pan to the surroundings