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 does oxidation mean in a REDOX reaction?

Back

Oxidation is the process in which an atom, ion, or molecule loses electrons, resulting in an increase in its oxidation state.

Front

What does reduction mean in a REDOX reaction?

Back

Reduction is the process in which an atom, ion, or molecule gains electrons, resulting in a decrease in its oxidation state.

Front

What is the oxidation state of an element in its elemental form?

Back

The oxidation state of an element in its elemental form is 0.

Front

What is the common oxidation state of oxygen in compounds?

Back

The common oxidation state of oxygen in compounds is -2.

Front

How do you determine the oxidation state of an element in a compound?

Back

To determine the oxidation state, use known oxidation states of other elements in the compound and apply the rules of oxidation states.

Front

What happens to the oxidation state of calcium in the reaction 2Ca(s) + O₂(g) → 2CaO(s)?

Back

Calcium is oxidized from 0 to +2 in this reaction.

Front

What happens to the oxidation state of nitrogen in the reaction N₂(g) + 3 H₂(g) → 2 NH₃(g)?

Back

Nitrogen is reduced from 0 to -3 in this reaction.

Front

What is the oxidation state of selenium in NaSeO₃?

Back

The oxidation state of selenium in NaSeO₃ is +4.

Front

What is a beta particle?

Back

A beta particle is a high-energy, high-speed electron or positron emitted during radioactive decay.