When electrons are in the lowest possible energy levels they are in the excited state. True
False

Is laundry detergent an acid or a base?

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.