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17 Cards in this Set
- Front
- Back
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periodic
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decribes something that occurs or repeats at regular intervals
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periodic law
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the law that states that the repeating chemical and physical propeties of elements change periodically with the atomic number.
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period
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in chemistry, a horizontal row of elements in the periodic table
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group
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a vertical column of elements in the periodic table : elements in a group share chemical properties.
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alkali metal
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one of the elements of Group 1 of the periodic table (lithium, sodium, potassium, rubidium, cesium, and francium)
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alkaline-earth metal
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one of the elements in Group 2 of the periodic table (berylium, magnesium, calcium, barium, and radium)
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halogen
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one of the elements of Group 17 of the periodic table (fluorine, chlorine, bromine, iodine, astatine); halogens combine with most metals to form salts.
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noble gas
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one of the elements of Group 18 of the periodic table (helium, neon, argon, krypton, xenon, radon) noble gases are unreative
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chemical bonding
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the combining of atoms to form molecules or ionic sompunds
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chemical bond
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an interaction that holds atoms or ions together
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valence electron
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an electron that is found in the outermost shell of an atom and that determines the atom's chemical properties
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ionic bond
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a bond that forms when electrons are transferred from one atom to another, which results in a positve ion and a negative ion
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ion
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a charged particle that forms when an atom or group of atoms gains or loses one or more electrons
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crystal lattice
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the regular pattern in which a crystal is arranged
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covalent bond
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a bond formed when atoms share one or pairs of electrons
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molecule
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the smallest unit of a substance that keeps all of the phsycial and chemical properties of that substance
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metallic bond
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a bond formed by the attraction between positively charged metal ions and the electons around them
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