Term Definition
Atom smallest part of matter
element pure substance made of only atoms
protons Inside the nucleus and have a positive charge
melleable metals can be flattened without crumbling
atomic number number of protons and electrons in an atom
density amount of mass in a certain volume
metalloids group of can be like metals and nonmetals
electrons outside of the nucleus and have a negative charge
metals group that are good conductors of heat and electricity, are malleable and ductile and have luster
luster shiny
neutrons found inside the nucleus and have no charge
chemical symbol abbreviation for chemical name
ductile metals can be drawn into the thin wire
corrosive property of metals= Rusting
atomic mass how much a certain amount weights
non metals group that are poor conductors of heat and electricity, and are brittle
element A pure substance ; made of only 1 atom
sublimation solid to gas
deposition gas to solid
evaporation liquid to gas
melting solid to liquid
freezing liquid to solid
condensation gas to liquid
atom theory the study of atom

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