Question

a scientist notices that a lump of niobium is warm to the touch and wonders if nuclear reactions are taking place in the metal. how can she find out?
○ measure the metal’s temperature
○ check for the presence of alpha, beta, and gamma particles.
○ look for the presence of niobium compounds.
○ place the niobium in a pressurized container, and see if the lump becomes warmer.

Explanation:

Nuclear reactions emit alpha, beta, gamma particles. Measuring temperature (A) or looking for compounds (C) doesn't confirm nuclear reactions. Pressurizing (D) isn't a test for nuclear reactions. Detecting these particles is the way to check for nuclear reactions.

Answer:

B. Check for the presence of alpha, beta, and gamma particles.