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Atomic Theory
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 | positive electric charge equal in magnitude to that of an electron, but of opposite sign |
Element | broken down matter into simpler substances and are primary constituents of matter |
Atom | the basic unit of a chemical element |
Malleable | the ability to be hammered or pressed permanently out of shape without breaking |
Luster | gentle sheen or soft glow |
Ductile | ability to be drawn into a thin wire |
Corrosive | rusting |
Density | mass of an object/thickness |
Nobel gas | A group of elements that are odorless, colorless, monatomic gases, with low chemical reaction |
Halogens | any of the elements occupying group (17) of the periodic table |
Transitional metals | Any of the set of metallic elements occupying a central block (4-12) in the periodic table |
Alkali Metals | any of the elements occypying Group 1A (1) of the periodic table |
Alkaline Earth metals | any of the elements occupying group (2) of the periodic table |
Alloy | combing two or more metallic elements |