7 Radioactivity SAQ2

Isotopes

To detect radiation

The atomic number increases by 1, and the mass number remains the same

<p>Cancer treatment</p> Signup and view all the answers

<p>Americium-241</p> Signup and view all the answers

<p>Isotopes have the same atomic number but different mass numbers.</p> Signup and view all the answers

<p>The half-life of a radioactive isotope is the time taken for half the atoms in a sample of the isotope to decay.</p> Signup and view all the answers

<p>The atomic number decreases by 2 and the mass number decreases by 4.</p> Signup and view all the answers

<p>Carbon-14 is used in archaeology to date organic materials.</p> Signup and view all the answers

<p>Beta emission increases the atomic number by 1 and leaves the mass number unchanged, while alpha decay decreases the atomic number by 2 and the mass number by 4.</p> Signup and view all the answers