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Periodic table terms
Periodic Table Vocab terms
| Question | Answer |
|---|---|
| Atomic Number | The number of protons in the nucleus of an atom. |
| Atomic Mass | The average mass of all the isotopes of an element. |
| Atom | The basic particle from which all elements are made. |
| Electron | A negatively charged particle that is found outside the nucleus of an atom. |
| Element | A pure substance that cannot be broken down into other substances by chemical or physical means. |
| Group | Elements in the same vertical column of the periodic table; also called a family. |
| Isotope | An atom with the same number of protons and a different number of neutrons from other atoms of the same element. |
| Metal | A class of elements characterized by physical properties that include shininess, malleability, ductility, and conductivity. |
| Neutron | A small particle in the nucleus of the atom, with no electrical charge. |
| Nonmetal | An element that lacks most of the properties of a metal. |
| Nucleus | The central core of the atom, containing protons and usually neutrons. |
| Period | A horizontal row of elements in the periodic table. |
| Proton | A positively charged particle that is part of an atom's nucleus. |