Classify the following elements as halogens alkali metals alkaline earth metals, transition elements or inner transitional elements calcium, gold, iron, magnesium, plutonium, potassium, sodium and uranium

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.

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same