An egg is placed at the bottom of a bowl filled with water. Salt is slowly added to the water until the egg rises and floats. From this experiment, one concludes
A) salt sinks to the bottom.
B) the density of salt water exceeds the density of egg.
C) buoyant force does not always act upward.
D) calcium in the egg shell is repelled by sodium chloride.

Question

Quizplus · Accepted Answer

When salt is added to water, it increases the water's density. If the density of the saltwater solution becomes greater than the density of the egg, the egg will float due to the increased buoyant force acting on it. This principle is based on Archimedes' principle, which states that the buoyant force on an object submerged in a fluid is equal to the weight of the fluid that the object displaces.

An Egg Is Placed at the Bottom of a Bowl