Chem Midterm part 4
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- He discovered that uranium minerals, even if wrapped in paper and stored in the dark, would produce dark images on photographic plates.
- Antoine-Henri Becqueral
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Showed that radioactive emissions were unaffected by temp, pressure, etc.
Discovered Polonium and radium. - Marie and Pierre Curie
- 3 common types of radiation are
- alpha, beta, and gamma.
- Properties of alpha radiation are
- Helium (+ charge) emitted from unstable nuclei
- Properties of beta radiation are
- High speed electrons (- charge) emitted from unstable nuclei
- Properties of gamma radiation are
- High energy electromagnetic radiation of very short wavelength that usually accompanies other radioactive emission.
- The induced conversation of an atom of one element to an atom of another element is called
- nuclear transmutation
- The splitting of a nucleus into 2 smaller nuclei with a release of energy is called
- nuclear fission
- nuclear fission is used in
- nuclear power plants to generate electricity and the atomic .
- Physicist who designed the first functional nuclear fission reactor
- Enrico Fermi
- Combining the nuclei of 2 atoms to form a more massive atom with the release of energy is called
- nuclear fusion
- nuclear fusion is used in
- the hydrogen , and occurs naturally in the Sun.
- 2 things used to measure radiation are
- geiger counter and dosimeter
- Radiation can be used for
- electricity generation(fission), fire alarms(radioactive nuclides), medicine(radioisotopes, radiation therapy, etc), and food perservation.
- Half life is
- the time it takes for half of a radioisotope (radioactive) to decay.