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What is 1 + 3?
a table that has elements organized by properties and name, symbol, and atomic number.
protons + neutrons = ?
total number of protons in an atom
characteristics of metals
shiny, good conductor of electricity, malleable
characteristics of non-metals
dull, poor conductor of electricity and brittle
"classes" of elements that are grouped together in the periodic table
metals,non-metals, metalloids ( a few belong to noble gases)
how are elements arranged in the periodic table