Volume is the amount of space that an object takes up. Volume is constant for solids and liquids; it varies for gases. The volume of an object can be measured in many ways. For a regular solid, use formulas like V=l*w*h or V=B*h. For an irregular solid, use the water displacement method. For a liquid, use a graduated cylinder. Common units for volume include cubic centimeters, milliliters, and liters. Volume is a physical property. Mass is the amount of matter in an object. The mass of an object is constant. Mass is measured with a balance. Common units for mass are grams and kilograms. Hope this helps! Thank you for posting your question at here on brainly. -Charlie
<span>In the Bohr model electrons in atoms can occupy allowed orbits where they do not emit energy. Exchange of energy with the surrounding environment occurs only when an electron "jumps" from an orbit to another. Hope this answers the question. Have a nice day.</span>
