In a nuclear power plant, the nuclear reaction is kept from going critical by keeping the rate of reaction safe. How do the control rods figure into this? The control rods absorb excess neutrons, keeping them from causing too many uranium atoms to split too quickly. The control rods absorb excess uranium atoms so that the reaction doesn't happen too quickly. The control rods absorb the excess heat produced in the reaction. The control rods provide additional neutrons to keep the reaction going.

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal. b. he is determining chemical properties that are sufficient to identify the metal. c. he is determining physical properties that are insufficient to identify the metal. d. he is determining chemical properties that are insufficient to identify the metal.