Term Definition
Elements pure substance make of only 1 Atom
Atom smallest particle of matter
Melting solid to a liquid.
Evaporation Liquid to gas
freezing Liquid to solid
sublimation solid to gas
deposition Gas to solid
condensation gas to a liquid.
Protons Inside the nucleus and have a positive charge
Malleable (of a metal or other material) able to be hammered or pressed permanently out of shape without breaking or cracking.
Atomic number the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
Density Amount of mass in a certain volume
Metalloids Group of can like metals and nonmetals
Electrons Outside of the nucleus and have a negative charge
Metals a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity
Luster a gentle sheen or soft glow, especially that of a partly reflective surface.
Neutrons Found inside the nucleus have not change
Chemical Symbol
Ductile (of a metal) able to be drawn out into a thin wire.
Corrosive tending to cause corrosion.
Atomic Mass How much a certain amount weight
Nonmetals an element or substance that is not a metal.
Atoms the basic unit of a chemical element.
Element a part or aspect of something abstract, especially one that is essential or characteristic.
Atomic Theory The study of the atom

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