Isotopes
What is an isotope?
An element with the same number of protons but a different number of neutrons.
What are the 3 types of nuclear decay?
Alpha, Beta and Gamma Decay
Define Half-Life
The time it takes for half the atoms in a sample to undergo nuclear decay.
The process where unstable atomic nuclei release energy by emitting waves or particles.
What element is used in carbon dating?
Carbon. bro if you got that wrong youre acc so stupid
True or False: Isotopes have a different mass number
True
Define Nuclear Decay
The breakdown of an unstable nucleus into a more stable one, releasing radiation.
Describe the travel distance for Alpha, Beta and Gamma radiation particles.
Alpha - short distances, Beta - medium distances, Gamma - long distances and through materials
True or False: Isotopes also have a different number of electrons compared to protons
False
Describe the speed of Alpha, Beta and Gamma particles from slowest to fastest.
Alpha - slowest, Beta - Fast, Gamma - Very fast.
What are the two main carbon isotopes?
Name the charges of alpha, beta and gamma radiation.
Alpha - +2. Beta - -1. Gamma - -1
Bromine has two stable isotopes, 79Br and 81Br; a Br₂ mass spectrum shows peaks at m/z 158, 160, and 162 with relative intensities 25:50:25—determine the percent abundances of 79Br and 81Br and the relative atomic mass of bromine.
The symmetric 25:50:25 ratio implies 79Br = 50% and 81Br = 50%, giving a relative atomic mass of 80.0.