Energy Storage and Conversion

True or false: An electrochemical cell changes the energy in chemicals into electricity?

True or false: A battery is made of one or more electrochemical cells?

True or false: Some electrical appliances use batteries as a source of energy?

True or false: When a torch is switched on, the chemical energy in the cells is changed into heat energy?

True or false: When all the energy stored in a cell has been used up by the appliance, the appliance will continue working?