why is it that food containers expand when they spoil? If the container is a closed system and matter can’t be created, what causes an increased pressure?

Question

why is it that food containers expand when they spoil? If the container is a closed system and matter can’t be created, what causes an increased pressure?

In: Biology

Answer 1

Bacteria in the food creates gas as a byproduct. The gas is less dense than the solid matter. This gas takes up more space and causes the container to expand.