Idenify each statement below as either oxidation or reduction. 1.

Occurs when atoms gain electrons during bonding.:

2.

Occurs when the oxidation number of an element decreases in chemical reaction.:

3.

Occurs when atoms lose electrons during bonding.

4.

F + e- -> F-

5.

Occurs when the oxidation number of an element increases in chemical reaction.:

Occurs when the oxidation number of an element increases in chemical reaction.

6.

2I- -> I2 + 2e-

Explanation:

An oxidation reaction has the following properties;

The reduction reaction is the opposite of the points mentioned above;

1. Occurs when atoms gain electrons during bonding: Reduction

2.  Occurs when the oxidation number of an element decreases in chemical reaction: Reduction

3.  Occurs when atoms lose electrons during bonding: Oxidation

4.  F + e- > F-  : Reduction

5.  Occurs when the oxidation number of an element increases in chemical reaction: Oxidation

6.  2I- > I2 + 2e- : Oxidation

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.

the awnser is group 12