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Phy Sci 17/18

17/18 definitions

Elements represented by chemical symbols
single elements monatomic
diatomic elements hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine, iodine
elements arranged in specific order with all their details (Mendeleeev) periodic table of elements
The properties of the elements vary with their atomic numbers in a periodic way. periodic law of elements
Solid, ductile, malleable, highly conductive, and chemically active metal
Gas, liquid, dull, brittle, room temp, poor conductors nonmetal
tells how many valence electrons groups
group 1 alkali
group 2 alkaline earth metals
group 1b to 8b transition
group 3 boron
group 4 carbon
group 5 nitrogen
group 6 oxygen
group 7 halogen
group 8 noble gases
Horizontal rows periods
Symbol with dots around it electron dot structure
Have full 8 electrons octet rule
How well an atom holds or attracts electrons electron affinity
how well an atom can attract or hold an electron when bonded to other atoms. electronegativity
when atoms share electrons(nonmetal-nonmetal) covalent bond
Atom which gains electrons and becomes an anion (metal-nonmetal) ionic bond
metal-metal metallic bond
three or more atoms polyatomic molecules
Created by: e-babe