when radioactive uranium decays to produce thorium, it also emits a particle. as seen in the balanced nuclear equation, this particle can best be described as
a) a helium atom.
b) an alpha particle or a helium atom.
c) a beta particle or a hydrogen nucleus.
d) an alpha particle or a helium nucleus.

The atoms of a solid aluminum can are close together, vibrating in a rigid structure. if the can is warmed up on a hot plate, what happens to the atoms?

What is the mass of oxygen gas is consumed in a reaction that produces 4.60mol so2

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.