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Periodic Table Vocab
Question | Answer |
---|---|
An element in Group 18 of the periodic table containing helium, neon, and argon, among others. | Noble gases |
The central core of an atom containing protons and usually neutrons. | Nucleus |
The sum of protons and neutrons in the nucleus of an atom. | Mass number |
A class of elements characterized by physical properties that include shininess, malleability, ductility, and conductivity. | Metal |
An element that lacks most of the properties of a metal. | Nonmetal |
A tiny, negatively charged particle that moves around the nucleus of an atom. | Electron |
A small, positively charged particle in the nucleus of the atom. | Proton |
Elements with atomic numbers higher than 92; elements that are not found naturally on Earth. | Synthetic elements |
A chart of the elements showing the repeating pattern of their properties. | Periodic table |
A one or two letter representation of an element. | Chemical symbol |
The ability of an object to transfer heat or electricity to another object. | Conductivity |
A term used to describe material that can be pounded into shapes. | Malleable |
Elements in the same vertical column of the periodic table. | Group/Family |
A horizontal row of elements in the periodic table. | Period |
A term used to describe a material that can be pulled out into a long wire. | Ductile |
The average mass of all of the isotopes of an element. | Atomic mass |
A small particle in the nucleus of the atom, with no electrical charge. | Neutron |
The number of protons in the nucleus of an atom. | Atomic number |
An atom with the same number of protons and a different number of neutrons from other atoms of the same element. | Isotope |
An element that has some of the characteristics of metals and some of the characteristics of nonmetals. | Metalloid |