Card Set Information
Atoms, Molecules, Ions
How do we determine average isotopic mass?
multiply the mass of the element by its relative abundancy
*** if there are multiple isotopes, after multiplying, add them together***
What is the problem with weighing out atoms?
What is the solution
we come up with moles, a collection of individual things put together
What is Avogadro's Number?
ONe mole of any substance contains 6.022 x 10
What is molar mass?
the mas in grams of one mole of any element
numerically equivalent to its atomic mass
What is a nuclear equation?
a reaction that changes an atomic nucleus
In a nuclear equation, the:
__ does not change
__ determines what element it is
# of protons and elections
# of protons
and Chemical Reactions
changes an atom's nucleus, usually producing a different element
Involves only a change in the way that different atoms are combined
Different isotopes of an element have completely different behavior in nuclear reactions
Different isotopes of an element have essentially the same behavior
The energy change accompanying a nuclear reaction is far greather than that accompanying a chemical reaction