Chapter 3, Quiz 2 Flashcards
The smallest of the main subatomic particles, located outside the nucleus, having a negative charge and a mass that is 1/1836th that of a proton
Electron
A subatomic particle found in the nucleus of an atom and having a positive charge and a mass slightly less than that of a neutron
Proton
A subatomic particle found in the nucleus of most atoms that has no electrical charge and a mass slightly greater than that of a proton
Neutron
The unique number of protons found in every atom of a particular element
Atomic Number
An atom of an element that has a different number of neutrons compared with other atoms of that element, resulting in a different mass number
Isotope
The total number of particles found in the nucleus of a particular isotope of an element
Mass Number
A charged atom or group of atoms that has gained or lost electrons, producing an unequal number of protons and electrons
Ion
A negatively charged ion
Anion
A positively charged ion
Cation
The mass of an atom expressed in atomic mass units; the weighted average of the masses of all the naturally occurring isotopes of an element
Atomic Mass