Chemistry - Edpuzzle: Nuclear Chemistry Part 1

Uranium-238 undergoes this type of radiation

alpha

Thorium-234 undergoes this type of radiation

beta

What is transmutation?

changing one element to another or one isotope to another

Some radioactive elements are constantly being renewed by _____ rays.

cosmic

What is radioactive decay?

decomposition of a nucleus to form a different nucleus

The lowest energy state for electrons in an atom is the

ground state

If Uranium 238 were to undergo ONLY gamma radiation, what element would be formed?

it would stay as uranium

Which subatomic particle is key to an atom's identity?

proton

Isotopes of the same element have the same number of _______ but different number of _______.

protons, neutrons

According to this movie, what is ionizing radiation?

the release of energy that allows an unstable nucleus to attain a more stable form

What is spontaneous fission?

when an atom simply breaks into two smaller atoms without any outside help

The half-life of an element is 3 days. If you have 100 g of the element to start, how much will you have after 12 days?

6.25 g