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Questions and Answers
The ion with one more oxygen than 'ate' is called 'per-______'.
The ion with one more oxygen than 'ate' is called 'per-______'.
ate
The ion CO32- is known as ______.
The ion CO32- is known as ______.
carbonate
The ion SO42- is referred to as ______.
The ion SO42- is referred to as ______.
sulfate
The ion ClO-1 is known as ______.
The ion ClO-1 is known as ______.
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The name for NH4+1 is ______.
The name for NH4+1 is ______.
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Match the polyatomic ions with their corresponding names:
Match the polyatomic ions with their corresponding names:
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Match the polyatomic ions with their respective definitions:
Match the polyatomic ions with their respective definitions:
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Match the name of the ion with its formula:
Match the name of the ion with its formula:
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Match the polyatomic ion category with appropriate examples:
Match the polyatomic ion category with appropriate examples:
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Match the polyatomic ions with their respective charges:
Match the polyatomic ions with their respective charges:
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Study Notes
Polyatomic Ions
- Polyatomic ions are groups of atoms that carry a charge.
- The charge of a polyatomic ion is determined by the number of electrons lost or gained by the atoms in the group.
Common Polyatomic Ions
- The most common polyatomic ions are those containing oxygen and a nonmetal atom.
- The names of these ions follow a predictable pattern, with the suffix "-ate" or "-ite" being used to indicate the number of oxygen atoms.
- "Per-ate" ions have one more oxygen atom than the "ate" ion.
- "Hypo-ite" ions have two fewer oxygen atoms than the "ate" ion.
Sulfate and Sulfite
- "Sulfate" is the most common form of the SO4 ions.
- "Sulfite" is the form of SO4 ions with one fewer oxygen.
Phosphate and Phosphite
- "Phosphate" is the most common form of the PO4 ions.
- "Phosphite" is the form of PO4 ions with one fewer oxygen.
Other Polyatomic Ions
- "Permanganate" is MnO4-1
- "Acetate" is C2H3O2-1
- "Hydrogen carbonate" (also known as "bicarbonate") is HCO3-1
- "Dichromate" is Cr2O72-
- "Hydroxide" is OH-1
- "Cyanide" is CN-1
- "Ammonium" is NH4+1
Memorizing Polyatomic Ions
- There are helpful resources available to help memorize polyatomic ions.
Polyatomic Ions
- Polyatomic ions are groups of atoms that act as a single charged unit.
- Polyatomic ions are common in chemistry and have specific names and formulas.
- The names of polyatomic ions are often based on their chemical composition, with prefixes and suffixes indicating the number of oxygen atoms present.
- "Per-ate" ions have one more oxygen atom than "ate" ions.
- "Ite" ions have one less oxygen atom than "ate" ions.
- "Hypo-ite" ions have two less oxygen atoms than "ate" ions.
- The most common form of a polyatomic ion is typically the "ate" form.
- Common examples of polyatomic ions include:
- Nitrate (NO3-1)
- Carbonate (CO32-)
- Phosphate (PO43-)
- Sulfate (SO42-)
- Ammonium (NH4+1)
- Hydroxide (OH-1)
- Cyanide (CN-1)
- Acetate (C2H3O2-1)
- Permanganate (MnO4-1)
- Dichromate (Cr2O72-)
- Hydrogen carbonate (or bicarbonate) (HCO3-1)
- The charge of a polyatomic ion can be indicated before or after the number, as long as the sign is included.
- For polyatomic ions with a charge of +1 or -1, the number 1 can be omitted, but the sign must still be present.
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Description
Test your knowledge of polyatomic ions and their characteristics with this quiz. Learn about common ions, their names, and the patterns that distinguish different forms. Challenge yourself to see how well you understand these important chemical compounds!
