Chemical Reactions Flashcards
Oxidation reactions
A transfer of electrons between species. Losing electrons.
Redox reactions
A transfer of electrons between species. Gaining of an electron.
Oxidation number rule 1
Free elements, Uncombined have a oxidation of zero
Oxidation number rule
In monatomic ions the oxidation number is equal to the charge.
Oxidation number for oxygen when it is combined
Always -2
If the oxidation number of an element increases in a reaction
The element is oxidised. And is the reducing agent.
If the oxidation number decreases in a reaction.
The element is reduced. And the element is the oxidising agent.
Precipitation reaction
Reaction where the end product is a form of solid. From aq to S.
Acid base reaction.
When a compound picks up or and donates a H+
Amphoteric
A substance that can act as both an acid or a base.
