Pesticides are best described as
a. polluting chemicals toxic to all living things
b. chemicals that destroy 33% of the world’s potential food supply
c. toxic chemicals used to control weed populations
d. toxic chemicals used to control pest populations

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next

If one fission reaction of a uranium-235 atom produced two neutrons, how many neutrons would be released if the chain reaction occurred three more times?

Is a chemical message sent by another individual.