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24 Cards in this Set
- Front
- Back
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chemical formula
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tells what elements a compound contains and the exact number of the atoms of each element in the unit of that compound 603
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chemical bond
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the force that holds atoms together in a compound 606
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compound
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substance formed from two or more elements in which the exact combination and proportion of elements is always the same
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Section 1 Review
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-elements of Group 18 (noble gases) rarely combine with other elements
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Section 1 Review
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-electron dot diagrams show the electrons in the outer energy level of an atom
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Section 1 Review
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-most atoms need eight electrons to complete their outer energy level
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Section 1 Review
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-atoms form chemical bonds in three separate different ways to complete their outer energy levels
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atom
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the smallest piece of matter that still retains the property of the element
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ion
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a charged particle that has either more or fewer electrons than protons 608
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ionic bond
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attraction formed between oppositely charged ions in an ionic compound 610
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covalent bond
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attraction formed between atoms when they share electrons 611
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molecule
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a neutral particle that forms as a result of electron sharing 611
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polar molecule
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a molecule with a slightly positive end and a slightly negative end as a result of electrons being shared unequally 614
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nonpolar molecule
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molecule that shares electrons equally and does not have oppositely charged ends 614
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Section 2 Review
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- an ionic compound is neutral because the sum of the ion charges is zero
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Section 2 Review
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- some atoms, like those in Group 4, share electrons instead of losing or gaining them
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Section 2 Review
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- covalent bonds can form single, double, or triple bonds
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anion
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a negatively charged ion
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binary compound
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compound that is composed of two elements 615
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oxidation number
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positive or negative number that indicates how many electrons an atom has gained, lost, or shared to become stable 615
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polyatomic ion
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positively or negatively charged, covalently bonded group of atoms 619
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hydrate
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compound that has water chemically attached to its ions and written into its chemical formula 620
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Section 3 Review
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- the net charge of a compound is zero
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Section 3 Review
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- Greek prefixes ar used to indicate how many atoms of each element are in a binary covalent compound
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