Oxidation Numbers
Flashcard
•
Chemistry
•
10th - 12th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an oxidation number?
Back
An oxidation number is a value assigned to an element in a compound that represents the number of electrons lost or gained by that element during a chemical reaction.
2.
FLASHCARD QUESTION
Front
What is the oxidation number of an element in its elemental form?
Back
The oxidation number of an element in its elemental form is 0.
3.
FLASHCARD QUESTION
Front
What is the oxidation number of oxygen in most compounds?
Back
The oxidation number of oxygen in most compounds is -2.
4.
FLASHCARD QUESTION
Front
What is the oxidation number of hydrogen in most compounds?
Back
The oxidation number of hydrogen in most compounds is +1.
5.
FLASHCARD QUESTION
Front
What is the oxidation number of alkali metals in compounds?
Back
The oxidation number of alkali metals (Group 1) in compounds is +1.
6.
FLASHCARD QUESTION
Front
What is the oxidation number of alkaline earth metals in compounds?
Back
The oxidation number of alkaline earth metals (Group 2) in compounds is +2.
7.
FLASHCARD QUESTION
Front
How do you determine the oxidation number of an atom in a polyatomic ion?
Back
To determine the oxidation number of an atom in a polyatomic ion, assign oxidation numbers to all other atoms in the ion and use the overall charge of the ion to solve for the unknown oxidation number.
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