The material in which a wave travels is called a

Can someone me with 1 to 4 plz. fast

How do you identify the anode on a power source such as a battery? how do you identify the cathode? how are terms anion and cation?

A5.000 g sample of niso4 h2o decomposed to give 2.755 g of anhydrous niso4. what is the formula of the hydrate? what is the full chemical name for the hydrate? what is the molar mass of the hydrate? niso4•_h2o what is the mass % of water in the hydrate?