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Questions and Answers
What is a monatomic ion?
What is a monatomic ion?
- An ion that contains oxygen
- An ion formed from a single atom (correct)
- An ion formed from multiple atoms
- A type of binary compound
What is a binary compound?
What is a binary compound?
A chemical compound composed of only two elements.
What does nomenclature refer to?
What does nomenclature refer to?
A system of naming.
Define oxyanion.
Define oxyanion.
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What is salt in chemistry?
What is salt in chemistry?
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What is meant by oxidation number?
What is meant by oxidation number?
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What are oxidation states?
What are oxidation states?
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Define formula mass.
Define formula mass.
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What is percentage composition?
What is percentage composition?
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What is an empirical formula?
What is an empirical formula?
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Study Notes
Monatomic Ion
- An ion formed from a single atom.
- Most ions exist as monatomic ions.
Binary Compound
- Composed of two elements only.
- In binary ionic compounds, the positive charge of the cation equals the negative charge of the anion.
Nomenclature
- A system for naming in various fields, especially sciences.
- Essential for professions such as law, where understanding specific nomenclature is crucial.
Oxyanion
- A polyatomic ion made of an element (usually nonmetal) and one or more oxygen atoms.
- Example: Chlorine forms four different oxyanions by combining with oxygen.
Salt
- An ionic compound formed from a cation and the anion from an acid.
- Created by the combination of an acid's anion with a base's cation.
Oxidation Number
- Indicates the electrons gained, lost, or shared by an atom to achieve stability.
- Example: The oxidation number of carbon in a molecule can be +4.
Oxidation States
- Assigned to atoms within compounds or ions.
- Reflects the same concept as oxidation numbers; for instance, carbon can have an oxidation state of +4.
Formula Mass
- The total of average atomic masses for all atoms represented in a molecular formula or ion.
- Used extensively in chemical calculations.
Percentage Composition
- Represents the mass percentage of each element within a compound.
- Useful for determining the contribution of each element to the overall mass of a compound.
Empirical Formula
- Indicates the smallest whole-number mole ratio of elements in a compound.
- Essential for solving chemical formula problems.
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