Term Definition
Element Pure substance made up of only one atom
Atoms Smallest particle of Matter
Melting make or become liquefied by heat.
Evaporation the process of turning from liquid into vapor
Condensation A transition turning Gas to Liquid
Freezing transition in which a liquid turns into a solid
Sublimation solid turns into a gas without first becoming liquid
Deposition When a gas turns into a solid without becoming a liquid first.
Corrosive Property of a metal=rusting
Ductile able to be drawn out into a thin wire
Luster a gentle sheen or soft glow
Density Amount Of matter in a certain space.
Atomic Number the number of protons in the nucleus of an atom
Metals a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity
Non-Metals an element or substance that is not a metal.group that are poor conductors of heat and electricity and are brittle.
Chemical Symbol An Abbreviation of the name of an element.
Electrons a stable subatomic particle with a charge of negative electricity, found in all atoms.
Malleable able to be hammered or pressed permanently out of shape without breaking or cracking
Protons 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
Metalloids an element whose properties are intermediate between those of metals and solid nonmetals
Neutrons 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
Atomic Mass the mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom or to the average number allowing for the relative abundances of different isotopes
Atomic Theory The Study of The Atoms

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