1. which metal is the most easily oxidized? highly active metal moderately active metal slightly active metal an inactive metal 2. what happens in a voltaic cell? chemical energy is changed to a electrical energy. electrical energy is changed to chemical energy. electrical energy is changed to magnetic energy. magnetic energy is changed to electrical energy. 3. in a dry cell, the electrolyte is a solid paste liquid gas 4. what elecrolyte is used in a lead storage battery?
hydrochloric acid
sulfuric acid
lead acetate
lead nitrate
5. which of the following is true about fuel cells?
they only produce energy in short bursts.
they are inexpensive.
they have never been built or used.
they can be designed so that they emit no pollutants.