201What is the small, dense central part of an atom called?
202Which two subatomic particles are found inside the nucleus of an atom?
203Electrons in an atom are generally found doing what?
204What is the electric charge carried by a proton?
205What is the electric charge carried by an electron?
206What is the electric charge carried by a neutron?
207The atomic number of an element is equal to the number of what particles in its nucleus?
208The mass number of an atom is equal to the total number of protons plus what?
209Atoms of the same element that have the same number of protons but different numbers of neutrons are called what?
210An element is fundamentally defined and distinguished from other elements by what property?
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