587676
Descrição
Mapa Mental por emmajarvis96, atualizado more than 1 year ago
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Criado por emmajarvis96
quase 12 anos atrás
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Radioactivity
- Radiation is the spontaneous breaking up of
unstable nuclei with the emission of one or
more types of radiation
- Types of radioactive radiation
- Alpha particles
- Beta particles
- Gamma Rays
- Alpha particles
- Discovered by Becquerel
- A Radioisotope is an isotope of an element
whose nuclei spontaneously breaks up with the
release of one or more types of radiation
- Uses Of Radioisotopes
- 2.Archaeological- By measuring the amount
of carbon 14 in the remains of a plant,
scientists can work out the age of the plant
- 3.Food Irradiation- Irradiation of food with
gamma rays kills disease carrying
organisms. eg spices
- 1.Medical- Gamma rays can be used to
penetrate the body and kill cancerous cells
- 2.Archaeological- By measuring the amount
of carbon 14 in the remains of a plant,
scientists can work out the age of the plant
- Uses Of Radioisotopes
- The Half-life of an element is the time taken for
half of the nuclei in any given sample of decay
- Precautions
- No radioactive substance should be handled with bare hands
- Radioactive materials must be stored in thick lead containers.
- People working with radioactive isotopes must wear protective clothing
- No radioactive substance should be handled with bare hands
- Nuclear Equations
Anexos de mídia
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