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14 Cards in this Set
- Front
- Back
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Molecule
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A _______ is an aggregate of at least two atoms in a definite arrangement held together by chemical forces (a.k.a chemical bonds).
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diatomic molecule
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A ___________ is a molecule that only contains two atoms. Examples are H2, etc.
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Polyatomic molecules
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__________ are molecules that contain more than two atoms.
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Molecular Formula
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A ___________shows the exact number of atoms of each element in the smallest unit of a substance.
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Empirical Formula
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The _________ tells us which elements are present and the simplest whole-number ratio of atoms.
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Polyatomic ions
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______________ are ions containing more than one atom.
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Cation
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A _______ is an ion with a positive charge as it has lost an electron.
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Anion
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An __________ is an ion with a negative charge as it has gained an electron.
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Binary Compounds
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A __________ are compounds formed from just two elements.
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Ternary Compounds
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___________ are compounds consisting of three elements.
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Mole (mol)
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The ___________ is the amount of a substance that contains as many elementary entities (atoms, molecules, or other particles) as there are atoms exactly 12g of the carbon 12-isotope.
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Molar mass
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__________ is the mass (in grams or kilograms) of 1 mole of units (such as atoms or molecules) of a substance.
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Acid
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An ______ is a substance that yields hydrogen ions (H+) when dissolved in water.
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Difference Between Cation and Anions:
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While Cation and Anions are both forms of an ion they are different. Cations have a positive charge and are lacking an electron, while Anions have negative charges and have an extra electron.
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