Nuclear Chemistry: Crash Course Chemistry

When does a chemical reaction occur?

• When the number of protons are not equal to the number of electrons

• all the time

• When an atom's valence electrons DO SOMETHING

• When the protons in a nucleus divide

What happens when the protons and neutrons in the nucleus of an atom are involved in a reaction?

• the atom is cut in half

• An enormous amount of energy is created

• the atom changes from one element to another

• Nothing, because they are never involved

What is an atom of the same element that has a different number of neutrons called?

• chemical reaction

• atomic element

• electrolyte

• isotope

What is half-life?

• the time it takes for half of a radioactive element to decay into a nonradioactive element

• the time it takes for one element to change to another

• half of the protons and neutrons in an element's nucleus

• 100 days

If all radioactive elements decay into nonradioactive elements, why do those elements still exists? (choose all that apply)

• They are replenished by radioactive elements from the atmosphere

• There are just that many of them around that they have not decayed yet

• radioactive elements are decayed by other radioactive elements, replenishing them

An aplha particle is basically the same as the nucleus of what element?

• helium

• hydrogen

• lithium

• carbon

Since alpha particles are heavy and have little energy, it takes a lot to stop them, which means they can easily enter the body and harm you

• False

• True

Beta decay radiation can be stopped by all of the following except

• your skin

• tissue paper

• aluminum foil

Which type of radiation can alter your DNA?

• Gamma decay

• Beta Decay

• Alpha decay

Spontaneous Fission is really only used to create neutrons that are used in other reactions 

• False

• True