flash cards

mendelevium
an element named after Dimitri Mendeleev
periodic law
laws states repeating chemical/physical properties of element when it is changed
period
horizontal row of elements in periodic table
group
vertical column of elements in periodic table. they also share chemical properties
ionization
atoms outermost orbitals that are not filled
ion
atom, radical or molecule that has gain/lost electrons and has negative/positive charge
cation
positively charged ion
anion
negatively charged ion
fluoride ions
ions of fluorine which have 1- charge
metal
element that is shiny /conducts heats and electricity well
nonmetals
element that conducts heats and electricity poorly
semiconductors
element/compound conducts electric current better than insulator but not as well as conductor
family
 groups in periodic table are categorized as being members of a unit
alkali metals
soft, shiney, reacts violently with water. is in group 1 of periodic table
alkaline earth metal
harder, denser, stronger, higher melting point than alkai metals. in group 2 of periodic table
transition metal
metals taht can use the inner shell before using the outer shell to bond
radioactive
nuclei of atom are continually decaying to produce different elements
noble gases
insulators
dont conduct heat/electricity well
metalloids
intermidiate properties between metals and non metals
inert
very slow to move/act
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