Redox

Front

What is a redox reaction?

Back

A redox reaction is a chemical reaction that involves the transfer of electrons between two species, resulting in changes in oxidation states.

Front

What is oxidation?

Back

Oxidation is the process of losing electrons or increasing the oxidation state of an atom or ion.

Front

What is reduction?

Back

Reduction is the process of gaining electrons or decreasing the oxidation state of an atom or ion.

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 always 0.

Front

What is a cation?

Back

A cation is a positively charged ion that is formed when an atom loses one or more electrons.

Front

What is an anion?

Back

An anion is a negatively charged ion that is formed when an atom gains one or more electrons.

Front

What is the oxidation number of oxygen in most compounds?

Back

The oxidation number of oxygen in most compounds is -2.

Front

What is the oxidation number of hydrogen in most compounds?

Back

The oxidation number of hydrogen in most compounds is +1.

Front

What is the role of a reducing agent in a redox reaction?

Back

A reducing agent is a substance that donates electrons to another substance, causing the other substance to be reduced.

Front

What is the role of an oxidizing agent in a redox reaction?

Back

An oxidizing agent is a substance that accepts electrons from another substance, causing the other substance to be oxidized.