Term Definition
Element a pure substance made of only one atom
Atom smallest partical that makes up matter
melting make or become liquefied by heat
evaporation the process of turning from liquid into vapor.
condensation water that collects as droplets on a cold surface when humid air is in contact with it.
sublimation When anything solid turns into a gas without first becoming liquid, that's sublimation.
doposition water vapors your breath on a cold day
protons + charge located in the nucleus
malleable Can be smashed without crumbling
atomic number the number of protons and electrons
density how much matter is in a space
metalloids sometimes they act as metals and sometimes they act as nonmetals
electrons – charge and it is located outside of the nucleus
metals they are good conductor of heat and electricity an they are shiny (luster) and they are very hard and most are dense
luster if something is luster it can shine or reflect
neutrons no charge located in the nucleus with the protons
chemical symbol the abbreviations for the element
ductile Can be drawn into a thin wire
corrosive if something is corrosive it can rust
atomic mass how much the atom weighs
nonmetals no luster not hard very brittle poor conductor with heat and electricity
freezing liquid to solid
atomic theory the study of the atom

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