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Atomic Theory

Atomic Theory flash cards

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.
Created by: apicazo