Term Definition
Protons A stable subatomic partical occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign
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 matter in a certain space
Metalloids an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. They are electrical semiconductors.
Electrons a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.
Metals a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity (e.g., iron, gold, silver, copper, and aluminum, and alloys such as brass and steel).
Luster a gentle sheen or soft glow, especially that of a partly reflective surface.
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.
Chemical symbol The abbreviation of an elements
Ductile metals can be drawn into a thin wire
Corrosive properties of metals=rusting
Atomic Mass How much a certain amount weights
Nonmetal group that are poor conductors of heat and electricity and are brittle
Atoms smallest particle that make up matter
Element a pure substance; made of only 1 atom
Deposition G to S
Sublimation S to G
Evaporation L to G
Melting S to L
Freezing L to S
Condensation G to L
Atomic Theory The study of the atom

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