Types Of Reactions Flashcards
What is an oxidation reaction?
An oxidation reaction is a chemical process in which a substance loses electrons.
What is a reduction reaction?
A reduction reaction is a chemical process in which a substance gains electrons.
True or False: In a redox reaction, oxidation and reduction occur simultaneously.
True
Fill in the blank: In a redox reaction, the substance that is oxidized is called the __________.
reducing agent
Fill in the blank: In a redox reaction, the substance that is reduced is called the __________.
oxidizing agent
What is the oxidation state of oxygen in most compounds?
-2
What is the oxidation state of hydrogen in most compounds?
+1
Define the term ‘redox reaction’.
A redox reaction is a chemical reaction involving the transfer of electrons between two species.
Which element is often used as a standard for measuring reduction potential?
Hydrogen
True or False: Oxidation can occur without reduction.
False
What happens to the oxidation state of a substance that is oxidized?
The oxidation state increases.
What happens to the oxidation state of a substance that is reduced?
The oxidation state decreases.
Multiple Choice: Which of the following is a common oxidizing agent? A) NaCl B) H2O C) KMnO4 D) CH4
C) KMnO4
Multiple Choice: Which of the following is a common reducing agent? A) O2 B) H2 C) Cl2 D) H2O
B) H2
What is the role of electrons in redox reactions?
Electrons are transferred between substances, leading to oxidation and reduction.
True or False: The total number of electrons is conserved in a redox reaction.
True
What is the half-reaction method?
A method used to balance redox reactions by separating the oxidation and reduction processes.
Define ‘oxidation number’.
An oxidation number is a value that represents the total number of electrons an atom either gains or loses in a chemical bond.
Fill in the blank: In organic chemistry, the addition of __________ typically indicates a reduction reaction.
hydrogen
Fill in the blank: The removal of __________ usually indicates an oxidation reaction.
hydrogen or electrons
What is the relationship between oxidation and energy?
Oxidation reactions often release energy.
What is corrosion in terms of redox reactions?
Corrosion is the process of metal oxidation, often leading to deterioration.
True or False: Redox reactions are only relevant in organic chemistry.
False
What is electrochemistry?
Electrochemistry is the study of chemical processes that cause electrons to move.
