Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how


Redox related questions and definitions for AP Chem

What does redox stand for? Is Oxygen always necessary? Redox is short for reduction-oxidation. Oxygen does not always have to be involved.
What happens in a redox reaction? A transfer of electrions occurs from one substance to another.
Which type of reaction is never a redox reaction? Is combustion a redox reaction? Double replacement reactions are never redox. Combustion is a redox reaction because oxygen is a reactant that is reducing, or acting as the oxidation agent.
What does LEO goes GER mean? LEO: Loss of electrons is oxidation GER: Gain of electrons is reduction
What is important to remember when assigning oxidation numbers according to the rules? The rules are hierarchical, and the rules that apply and appear first are more important and should not be broken.
Rule 1 The ____ of all the oxidation numbers in a compound must equal ______ 1. sum 2. zero
Rule 2 Free elements are _____ Zero
Rule 3 Ion charge is the ______ The oxidation number
Rule 4 Fluorine has an oxidation number of _____ as well as the other _______, as long as they are at the _____ of the molecule. 1. -1 2. ealogens 3. end
Rule 5 Oxygen is usually _____, unless it is combined with fluorine where it is ______ or in peroxides where it is _____. 1. -2 2. +2 3. -1
Rule 6 When hydrogen is a cation its number is ____, and when it is an anion its number is ____. 1. +1 2. -1
Rule 7 The ____ of the oxidation numbers must equal to the ____ of the anion. 1. sum 2. charge
Why do we need to assign oxidation numbers? So we can clearly see which elements are being oxidized and which are being reduced. When the charge increases, it was oxidized. When the charge decreases, it was reduced.
When assigning oxidation numbers to compounds with polyatomic ions, what must you do? 1. Remember to distribute the charge to all the atoms 2. Assign numbers to the outside elements first
Reduction When a substance gains electrons and the charge decreases
Oxidation When a substance loses electrons and the charge increases
Reducing Agent An element that makes the other element reduce its charge; the element that is being oxidized.
Oxidizing Agent An element that makes the other element increase its charge; the element that is being reduced.
What is a spectator? An element that is not reducing or oxidizing. Its charge remains the same consistently.
What is a half-reaction? A reaction with oxidation numbers that only shows the redox of a single element rather than the entirety.
Created by: Rehnuma32219