Which term is defined by the amount of a certain isotope that occurs in a natural sample of an element?
a) percent abundance
b) percent atomic weight
c) average atomic mass
d) ion abundance

For each of the following types of reactions, write a general reaction formula in the symbolic form—for example, a + b → ab. single-displacement double-displacement synthesis decomposition

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?

Which of the following are in a chemical family a. ca, sc, k b. cu, ag, au c. so, ge, sb