What is a half-life?
When does a radioactive sample emit the largest number of decay particles? Why is this information important? (How can it be applied in our world today?)
Do you think the shape of the curve on your graph would change if you increased the half-life to 20 seconds? What does this reveal about radioactive decay?
Do you think the shape of the curve on your graph would change if you started with a smaller sample, say 50 atoms (pennies)? What does this reveal about radioactive decay?

Half-life is the time required for a quantity to reduce to half of its initial value. The term is commonly used in nuclear physics to describe how quickly unstable atoms undergo, or how long stable atoms survive, radioactive decay.

LARGEST NUMBER OF DECAY PARTICLES:

A radioactive sample emits the most radiation as soon as it is formed or isolated. The reason is that that is when the concentration of theradioactive material is the greatest. It begins to decay immediately and as itdoes, the concentration of radioactivematerial in the sample gets less.