5.1-5.3 Redox reactions and Oxidation and reduction

________ is a reaction in which an element, ion or compound gains electrons.

________ have been reduced as the oxidation state has decreased from +2 in Cu2+ to 0 in Cu and they have gained electrons:

________ in a compound usually has the oxidation state +3.

Iron can form ions with a 2+ charge, called iron (________) ions or a 3+ charge, called iron (III) ions.

The ________ is the oxidation state of the element.

________ can bond in different ways by forming ions with different charges.

The ________ is reduced to Cu by gaining electrons and has oxidised the hydrogen, so the oxidising agent is therefore copper oxide.

________ is a reaction in which an element, ion or compound loses electrons.

The ________ is very important in the chemical industry as a means of extracting metals from their ores.

When ________ reacts with oxygen to form ________ oxide, the formula depends on the oxidation state of the ________ ions.

________ is gain of electrons, loss of oxygen.

________ is the loss of electrons, gain of oxygen.

Oxidation Is Loss of electrons, Reduction Is Gain of electrons

electron loss/gain and oxidation state