Term Definition
Element Pure substance made of only 1 atom.
Atom Smallest partical of matter.
Melting When matter goes from solid to a liquid.
Evaporation liquid to gas
Condensation Change of matter from a gas to a liquid state.
Freezing Change of matter from a liquid state to a solid state.
sublimation The process by which a solid changes directly into a gas.
deposition The process by which a gas changes into a solid.
Protons + charge (positive charge) located in the nucleus.
Metalloids Group of can be like metals and nonmetals
Neutrons 0 charge (no charge/neutral) , located in the nucleus .
Atomic Mass How much a certain amount weights
Malleable Metals can be flattened without crumbling
Electrons – charge (negative charge) located outside of the nucleus.
Chemical Symbol Abbreviation for chemical name
Nonmetals Group that are poor conductors of heat and electricity and are brittle
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.
Metals a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity
Ductile of a metal) able to be drawn out into a thin wire
Atoms The smallest particle that makes up everything
Density Amount of matter in a certain space.
Luster a gentle sheen or soft glow, especially that of a partly reflective surface.
Corrosive Property of metals= rusting
Element a part or aspect of something abstract, especially one that is essential or characteristic.
Atomic Theory the story of the atom

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