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30 Cards in this Set
- Front
- Back
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Chemical symbol
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an abbreviated way to write the name of an element
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nucleus
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positivly charged atom center
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electron
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particles with a negitive charge
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proton
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particles with a positive electrical charge
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neutron
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neutral particle
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atomic number
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number of protons in an atom's nucleus
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electron cloud
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area around the nucleus of an atom wher the atom's electrons are most likely located
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valence electrons
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outermost electrons of an atom to find out what it would react with
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atomic mass number
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total number of protons and neutrons in an atom
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isotope
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atoms of the same element that have different number of nuetrons
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average atomic mass
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weighted average mass of the mixture of an elements isotopes
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periodic table
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organized list of all known elements
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Group/family
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vertical
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period
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horizontal
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chemical formula
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chemical shorthand that uses symbols to tell what elements are in a compund
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ionic bond
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gives element its atoms instead of sharing
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ion
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charged particle that has more or less electrons then protons
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covalent bond
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elemnts share atoms
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polar molocule
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elements that share atoms unequally
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unpolar molocule
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element that share atoms equally
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corrosive
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reacts chemically with metal
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binary compound
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compound with 2 elements
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polyotomic ion
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positively or negitively charged covanlently bonded group of atoms
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diatomic molocule
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a molecule that consists of 2 atoms if the same element
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metalic bonding
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accours because electrons move freely amoung a metals positively charged ions explains properties such as ductility and the ability to conduct electricity
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transition elements
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elements in groups 3-12 on a periodic table
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alkali metals
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group 1 conducts heat and electricity
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alkaline earth metals
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group 2 of periodic table has 2 electrons on outer level
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halogens
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in group 17, very reactive
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organic compound
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large number of compbounds that contains carbons
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