Katrina inserts a key into her car's ignition. she turns the key, putting her car into ignition mode. in this mode, some energy is used to increase the temperature of the car's fuel. this energy allows the fuel to combust and the car to move. what's this energy called? select one: a. absorbed energy b. activation energy c. chemical energy d. released energy

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.