Chemisty3-1ruiz Flashcards
Who published the first accepted version of the periodic table
Dimitri mendeleev
Horizontal rows on the periodic table , with the same energy level
Periods
Vertical columns on the periodic table with the same number of valence electrons sometimes called families
Groups/families
Element property that has high luster, ductile and malleable,high density, good conductor ,most solid ,lose electrons
Metals
Element property has property of metals and non metals ,semi conductor,all solid, lose and gain electrons
Metaloids
Element property with low luster, brittle, low density,poor conductor, can be solid liquid or gas,gain electron
Non metals
What periodic family has one valence electron,reactive metal,never found free,
Alkali metals
What periodic family Have two valence electrons, never found unconvinced in nature
Alkaline earth metals
What element is called the basis of life
Carbon 😄
What atomic family has one or two valence electrons,excellent conductors ,mostly copper tin zinc gold
Transitional metals
What atomic family has 7 valence electrons,most reactive non metals,never found free in nature and REACT WITH ALKALI METALS TO FORM SALT
Halogens
What atomic family has 8 valence electrons,extremely unreactive,colorless gasses , found in small amounts in earths atmosphere
Nobel gasses
Nuetral atoms have equal ?
Protons (+) and electrons (-)
Have the same same protons but different nuetrons
Isotopes
Human eye can see from nm?
400nm-700nm
