The isotope enhancement of Uranium for nuclear energy requires the step UF4(s) -> UF6 (g).. This is not possible for Thorium because:

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder

Which of these is a physical property

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.