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Atomic Chemistry - Types of Radiation
Transcript of Atomic Chemistry - Types of Radiation
and particles that are given off
be a radioactive source.There are
three main types of radiation.
They include: alpha, beta and gamma
rays. What is alpha radiation? Alpha radiation is the emission of
a Helium particle. It consists of 2
protons and 2 nuetrons. It has a
charge of +2 because there are no
electrons emitted. What does alpha radiation look like? Like
This What is Beta Radiation? A Beta Particle is an elecron resulting
from the breaking apart of nuetrons in
the nucleus. It has a charge of -1. What does Beta radiation look like? What is Gamma radiation? Gamma radiation is the emission of a
high-energy photon. Gamma radiation
has no mass and no electrical charge. What does Gamma radiation look like? Each of the different types of radiation has a
different penetrating power. Alpha rays are weak,
they cannot pass through a piece of paper. Beta
rays are stopped be a piece of wood. Gamma rays
are powerful, they can pass through both paper and
wood but are stopped by a few centimeters of lead.
The heavier the radiation particle, the weaker its
penetration power is. Why is this important to you? Alpha radiation (americium-241) is used in smoke detectors. Also, Beta radiation is used to treat cancer patients. Capsules of radioactive material are injected into the body near the cance site. The Beta radiation kills the surrounding cancer cells. Writing nuclear equations..... Example for Alpha radiation: Alpha Particle *Both the Atomic number and the Mass Number should be equal on both sides of the equation. Example for Beta Radiation: An electron has no mass
so the atomic mass must
stay the same for the
new element. The total atomic number
is equal on both sides
of the equation. Still need more help understanding radiation?
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