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Atomic Theory
Atomic Theory flash cards
| Term | Definition |
|---|---|
| Neutron | a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen. |
| Electron | a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids. |
| Proton | a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign. |
| Element | Each element is distinguished by its atomic number, i.e., the number of protons in the nuclei of its atoms. |
| Atom | the basic unit of a chemical element. |
| Luster | Shiny, good conductor of heat and electricity |
| Ductile | Can be drawn into a thin wire |
| Malleable | Can be smashed without crumbling |
| corrosile | tending to cause corrosion |
| density | the degree of compactness of a substance |
| nobel gases | any of the gaseous elements |
| halogens | any of the elements fluorine, chlorine, bromine, iodine, and astatine, occupying group VIIA (17) of the periodic table |
| transitional metal | any of the set of metallic elements occupying a central block |
| alkali metal | any of the elements lithium, sodium, potassium, rubidium, cesium, and francium, occupying Group IA (1) of the periodic table |
| alkali earth metal | The alkaline earth metals are a group of chemical elements in the periodic table with very similar properties |
| Alloy | a metal made by combining two or more metallic elements, esp. to give greater strength or resistance to corrosion. |
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