Bushong

• Matter is anything that occupies space and has mass.
• Atoms are the building blocks of matter.
• Mass is the quantity of matter as described by its energy equivalence and is the distinguishing characteristic of matter.
• Weight is the force exerted on a body under the influence of gravity.
• Matter and energy are different forms of the same substance.
• Matter is a material substance with mass of which physical objects are composed.
• Atoms and molecules are the fundamental, complex, building blocks of matter.
• Energy is the ability to do work and its SI Unit is joules (J).
• In Radiology, energy is measured in electron volts (eV).
• Potential Energy is the ability to do work by virtue of position.
• Kinetic Energy is the energy in motion.
• Chemical Energy is the energy released by a chemical reaction.
• Electrical Energy is the work that can be done when an electron moves through an electric potential difference (V).