Term
| How is the gain or loss of oxygen in a chemical reaction linked to oxidation and reduction? |
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Definition
| the substance gaining oxygen is oxidized, while the substance losing oxygen is reduced. |
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Term
| How is the gain or loss of electrons linked to oxidation and reduction? |
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Definition
| losing electrons is oxidation. gaining electrons is reduction. |
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Term
| What happens to iron when it corrodes? |
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Definition
| iron, a common construction metal often used in the form of the alloy steel, corrodes by being oxidized to ions of iron by oxygen. |
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Term
| Oxidation-reduction reactions |
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Definition
| reactions that involves the transfer of electrons between reactants. |
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Term
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Definition
| another name for an oxidation-reduction reaction. |
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Term
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Definition
| complete or partial loss of electrons or gain of oxygen. |
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Term
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Definition
| complete or partial gain of electrons or loss of oxygen. |
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Term
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Definition
| the substance taht loses electrons |
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Term
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Definition
| the substance that accepts electrons |
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Term
| What is the general rule for assigning oxidation numbers? |
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Definition
| as a general rule, a bonded atom's oxidation number is the charge that it would have if the electrons in the bond were assigned to the atom of the more electronegative element. |
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Term
| How are oxidation and reduction defined in terms of a change in oxidation number? |
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Definition
| an increase in the oxidation number of an atom or ion indicates oxidation. a decrease in the oxidation number of an atom or ion indicates reduction. |
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Term
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Definition
| a positive or negative number assigned to an atom to indicate its degree of oxidation or reduction. |
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Term
| How are oxidation numbers used to identify redox reactions? |
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Definition
| if the oxidation number of an element in a reacting species changes, then the element has undergone either oxidation or reduction. therefore, the reaction as a whole must be a redox reaction. |
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Term
| How are changes in oxidation numbers used to balance a redox equation? |
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Definition
| in a balanced redox equation, the total increase in oxidation number of the species oxidized must be balanced by the total decrease in the oxidation number of the species reduced. |
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Term
| What is the procedure for balancing a redox equation using half-reaction? |
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Definition
| to balance a redox reaction using half-reactions, write seperate half-reactions for the oxidation and the reduction. after you balance atoms in each half-reaction, balance electrons gained in the reduction with electrons lost in the oxidation. |
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Term
| Oxidation-number-change method |
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Definition
| balance a redox equation by comparing the increases and decreases in oxidation numbers. |
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Term
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Definition
| an equation showing just the oxidation or just the reduction that takes place in a redox reaction. |
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Term
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Definition
| write and balance the oxidation and reduction half-reactions seperately before combining them into a balanced redox equation. |
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