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Periodic table vocab

Periodic table vocabulary

atomic mass average mass of all the isotopes of that element
atomic number number of protons in the nucleus of an atom
chemical symbol one or two letter abbreviation for an element
periodic table arrangement of elements showing a repeating pattern
neutron particle in the nucleus that has no charge
period term for the rows of the periodic table
nucleus very center of the atom
electron negatively charged particle that orbits the center of an atom
group term for the columns of the periodic table also known as families
proton positively charged particle in the nucleus of the atom
metal elements that are good conductors of electricity and heat often shiny and bendable
luster shiny and reflective
malleable can be hammered or rolled into flat sheets or shapes
ductile can pulled out or drawn into long wires
thermal conductivity ability to transfer heat
electrical conductivity ability to carry electrical current
reactivity ease and speed with which one element combines with another
corrosion deterioration of a metal due to a chemical reaction
alkali metals most reactive elements, are seldom found uncombined with other atoms
alkaline earth metals these metals are harder and denser and melt at higher temperatures
nonmetal element that lacks most properties of a metal. mostly found on the right side of periodic table
diatomic molecule two molecules of the nitrogen family are combined with each other and is not very reactive
halogens means "salt forming" flourine, bromine, chlorine and iodine. very reactive
noble gasses elements of group 18. Do not normally form compounds because they do not share electrons
metalloids have some properties of metals and some of nonmetals. Solid at room temperature. Hard Brittle and somewhat reactive
semiconductors substances that can conduct electricity under some conditions
Created by: superstephens