Ace the 2026 PSI Barbering Exam – Snip, Style, and Success Awaits!

The correct answer is matter. Matter is defined as anything that occupies space and has mass, which means it has weight. This definition encompasses all physical substances in the universe, including solids, liquids, and gases. Matter is composed of atoms and molecules and can be observed in various forms, such as water, wood, air, and metal.

Understanding matter is essential in fields like chemistry, physics, and even barbering, where knowledge of different materials can affect products used on hair and skin. Other options provided do not fit the definition. Energy, for instance, refers to the capacity to do work or produce changes but does not have mass or occupy space in the same way matter does. Force is an interaction that causes an object to change its velocity, again lacking the properties of occupying space and having weight. Substance, while it can refer to a type of matter, does not encompass the broad concept as clearly as matter does.