Question

two lab partners are doing a static electricity investigation. they begin with a neutral pop can. after conducting the procedure, they observe that the pop can has become charged negatively. which statement accurately explains how this happened?
electrons were added to the object.
protons were added to the object.
electrons were removed from the object.
protons were removed from the object.

Explanation:

• Protons are in the nucleus and not easily transferred. So options with protons (adding or removing) can be ruled out.
• When an object is neutral, it has equal number of protons and electrons. If it becomes negatively - charged, it means there are more electrons than protons. So electrons must have been added.

Answer:

Electrons were added to the object.