Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Unit 6 Vocabulary Part 3 Atom: The smallest unit of matter that retains the identity of the substance. Proton: subatomic particle with a positive charge and located in the nucleus of the atom. The number of protons gives the atom its identity. Neutron: subatomic particle with no charge, the same mass as a proton, and located in the nucleus of the atom. Electron: subatomic particle with a negative charge and located outside the nucleus. Atomic number: the number of protons in the nucleus of an atom. This number identifies the atom. Atomic mass: the average mass number of all isotopes of an atom. Round this number to find the mass number of the atom. Isotope: Atom with the same number of protons but a different number of neutrons and is of the same element. Mass number: the number of protons and neutrons in the nucleus of an atom. Mass number = protons + neutrons Nucleus: the central part of the atom containing protons and neutrons. Electron Cloud: region surrounding the nucleus of an atom where electrons are most likely to be found.