In what year did the united states test the first successful atomic bomb?

Electrons are extremely important to what area of technology? a) anti-aging research b) household product development c) electronics d) drug discovery

Compare and contrast physical changes with chemical changes.

Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + ½o2(g) → mgo(s) + 146 kcal/mole h2(g) + ½o2(g) → h2o(g), δh = -57.82 kcal/mole what type of reaction is represented by the previous two examples?