Which of the following is true about acids? most acids are sour most acids corrode metals every acid contains hydrogen acids have a ph of greater than 7

This is the substance(s) formed in a chemical reaction.

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic

Iron is a transition metal with multiple oxidation numbers. (answer the following) a. what is the iron (ii) ion? how does it differ from the iron (iii) ion? b. if iron were to bond with oxygen, predict the formula for each oxidation number of iron. c. how would each formula be named?