Metals, Plastics, Fertilisers, Nuclear Chemistry Worksheet - National 5 Unit 3 Page 12
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13Exercise 11
1. We are all exposed to small amounts of radiation in our everyday lives, this is referred
to as background radiation. Give 2 sources of background radiation.
2. Copy and complete the following paragraph using the words in the box.
Helium
electromagnetic
electrons
isotopes
chemical
nucleus
penetrating hydrogen
protons
unstable
_____________ of some elements are radioactive. This is because they have an
_____________ nucleus.
There are three main types of radioactive decay. Alpha particles are _________
nuclei, beta particles are fast moving ____________ and gamma radiation is made up
of very ___________ _____________ radiation.
All three types of radiation come from the __________ of atoms.
3. Write equations to show how the following isotopes decay when they emit alpha
particles.
a)
b)
4. Write equations to show how the following isotopes decay when they emit beta
particles.
a)
b)
5. In each of the following questions, give the full nuclide notation of the atom formed
after the sequence of emissions stated.
a)
b)
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