Define the term “half-life”
What does it mean when we say an atom has “decayed”?
Do the number of atoms you start with affect the outcome? (In other words, would you get different half-life results is you started with 1000 pennies or m&ms?)
What happens to the total number of pennies (or m&ms) with each trial (half-life)?
How do scientists use radioactive decay to date fossils and artifacts?