Term
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Definition
| A shorthand method of expressing the makeup of a compound (pure substance) |
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Term
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Definition
| a small number placed beside the symbol of an element in a formula to indicate the number of atoms of that element contained in the compound represented by that formula |
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Term
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Definition
| symbols that indicate the number of electrons that an element gains or loses as it bonds |
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Term
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Definition
| Group 1 (IA) elements that each have one valence electron |
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Term
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Definition
| Group 2 (IIA) elements that each have two valence electrons |
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Definition
| stable elements found in Group 18 (VIIIA) that have eight valence electrons |
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Term
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Definition
| reactive elements in Group 17 (VIIA) that have seven valence electrons |
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Term
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Definition
| (Group 16); have 6 valence electrons-two fewer than a complete octet |
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Term
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Definition
a group of several atoms that act
as a single charged particle
must always be enclosed in parentheses
when it has a subscript
ammonium, acetate, bicarbonate, carbonate, hydroxide, nitrate, phosphate, sulfate, sulfite
(for formula see page 193) |
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Term
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Definition
a compound that is composed of two different elements
sodium floride NaF
potassium sulfide K2S
silver oxide Ag2O
zinc nitride Zn3N2
aluminum bromide AlBr3 |
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Term
| compounds with Polyatomic Ions |
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Definition
ammonium chloride NH4Cl
sodium hydroxide NaOH
potassium carbonate K2CO3
ammonium phosphate (NH4)3PO4
barium sulfate BaSO4
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