Which of the following is required for the flow of current in all systems? a) the presence of ions
b) an electrical potential ofo
c) a closed circuit
d) a short circuit

Which substance has non polar covalent bonds

Reduction is a reaction which results in a in electrons and a in positive charge of the atom or ion 1) a- loss 1) b- gain 2) a-increase 2) b-decrease

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.