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Atomic Theory
Term | Definition |
---|---|
Neutron | Has no charge |
Electron | Negative charge, found in all atoms, acting as an carries for all solids. |
Proton | Positive Charge |
Element | When something is made up of only one kind of atom. |
Atom | The basic unit of a chemical element. |
Malleable | Can be smashed without crumbling, Good conductors of heat and electricity, React with acids |
Density | The degree of compactness of a substance |
Corrosive | Can Rust |
Luster | Shiny |
Ductile | Can be drawn into a thin wire |
Noble Gases | They have eight atoms, and they do not react at all. |
Halogens | the most reactive non- metals. |
Alkali Metals | Their atoms have only one valence electron, these are very reactive with water. |
Alkali Earth Metals | The atoms have two valence electrons. These elements are reactive, but not as reactive as alkali metals. |
Transaction Metals | Are not as reactive as the alkali metals or the alkaline-earth metals. In fact, some are quite unreactive. |
Alloy | A metal made by combining two or more metallic elements. |
Metal | Good conductors |
Non-metals | Poor conductors |
Metalloid | Both metals and nonmetals |