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Atoms and P.T.:L1-L4
| Term | Definition |
|---|---|
| Periodic Table | An arrangement of the elements in order of their atomic numbers such that elements with similar properties fall in the same column,group. |
| Nonmetal | An element that conducts heat and electricity poorly. |
| Chemical Symbol | A one-, two-, or three-letter abbreviation of the name of an element. |
| Average Atomic Mass | The weighted average of the masses of all naturally occurring isotopes of an element. |
| Metal | An element that is shiny and that conducts heat and electricity well. |
| Metalliod | An element that has properties of both metals and nonmetals. |
| Group | A vertical column of elements in the periodic table; elements in a group share chemical properties. |
| Period | In chemistry, a horizontal row of elements in the periodic table. |
| Atom | The smallest unit of an element that maintains the properties of that element. |
| Electron | A subatomic particle that has a negative charge. |
| Nucleus | In physical science, an atom's central region, which is made up of protons and neutrons. |
| Proton | A subatomic particle that has a positive charge and that is located in the nucleus of an atom. |
| Neutron | A subatomic particle that has no charge and that is located in the nucleus of the atom. |
| Electron Cloud | A region around the nucleus of an atom where electrons are likely to be found. |
| Atomic Number | The number of protons in the nucleus of an atom. |
| Mass Number | The sum of the number of protons and neutrons in the nucleus of an atom. |
| Chemical Bond | An interactions that holds atoms or ions together |
| Valence Electron | An electron that is found in the outermost shell of an atom and that determines the atom's chemical properties |
| Ion | A charged particle that forms when an atom or group of atoms gains or loses one or more electrons |
| Ionic Bond | The attractive force between oppositely charged ions, which form when electrons are transferred from one atom to another |
| Covalent Bond | A bond formed when atoms share one or more pairs of electrons |
| Molucle | A group of atoms that are held together by chemical forces |
| Metallic Bond | A bond formed by the attraction between positively charged metal ions and the electrons around them |
Created by:
19warrent0618
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