Protons and neutrons have almost exactly the same mass. Electrons have a mass that is about 1/1835 the mass of a proton. Electrons have a unit negative charge. Protons each have a positive charge. These charges are genuine electrical charges. Neutrons do not have any charge....
1.Mass Conservation: Matter cannot be created or destroyed 2.Definite Composition: No matter the origin, a particular compound is made up of the same matter/elements in identical fractions. 3.Multiple Proportions: When one or more elements are combined together to form a compound, it is always...