High school class is discussing whether a particular discovery in chemistry has had a positive impact on society.
which question is the most important for the students to answer?
how have people and the environment been affected by the discovery?
how many scientists were involved in the discovery?
when was the discovery made?
at which institution was the discovery made?

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.