chem topic 12 Flashcards
Provide two examples of non-radioactive
radiation in our environment.
Visible light/radio waves/Infrared light
What is background radiation?
Natural and human-made sources of radiation that we
are exposed to every day from our diets, nuclear
reactors, the sun’s rays, medical, soil and rocks.
What does a chemical change always
involve?
Bond breaking/bond making
What does a nuclear change always
involve?
Changes to the nucleus of an atom
What is non-ionising radiation?
Low energy radiation that does not cause
atoms/molecules to lose electrons
What is ionising radiation?
High energy radiation that causes electrons to be lost
from atoms/molecules
Name the three types of radiation which
may be emitted during a nuclear reaction.
Alpha
Beta
Gamma
Alpha radiation
Symbol: He or α
Charge: 2+
Mass: 4
Beta radiation
Symbol: e or β
Charge: -
Mass: 0
Gamma radiation
Symbol: γ
Charge: 0
Mass: 0
Which of the three forms is the most
penetrative radiation?
Which is the least?
Gamma is the most penetrative and alpha is the least
Which of the three types of radiation is
described as non-particulate ie not made up
of a stream of particles?
Gamma is not made up of particles
13.Which type of radiation is unaffected when
passed through an electric field with positively
and negatively charged plates
Gamma as it has no charge
