Unit 17 Radioactive Decay
•Transferir como PPTX, PDF•
8 gostaram•4,982 visualizações
This document discusses radioactive decay and the three main types of radiation: alpha particles, beta particles, and gamma rays. It describes the key properties of each type of radiation, including their mass, charge, speed, and ability to penetrate matter. The document also introduces concepts like radioactive decay series, half-life, and how radioactive dating works. It concludes by noting that some elements are absent from Earth due to their very short half-lives.
Recomendados
Mais conteúdo relacionado
Mais procurados
Mais procurados (20)
Destaque
Semelhante a Unit 17 Radioactive Decay
Semelhante a Unit 17 Radioactive Decay (20)
Mais de Olympus High School - Jeff Taylor
Mais de Olympus High School - Jeff Taylor (20)
Último
Último (20)
Unit 17 Radioactive Decay
- 2. Unstable Atoms When the repulsive forces of the protons exceeds the ability of the strong nuclear force to hold them together, they are unstable. In addition, sometimes nuclei are too heavy and have too many neutrons to remain together
- 3. Three Types of Radiation Alpha Particles- 2 protons and 2 neutrons Beta Particles- electron Gamma Rays- Tiny electromagnetic waves
- 4. Alpha Particles * Represented by α (alpha) * They are equivalent to the nuclei of a He atom * (+2) Charge, heavy and slow moving *Limited penetrating power, stopped by sheet of paper
- 10. Alpha Particles * Represented by α (alpha) * They are equivalent to the nuclei of a He atom * (+2) Charge, heavy and slow moving *Limited penetrating power, stopped by sheet of paper Equation Example:
- 11. Conversion From One Element to Another Through Alpha Decay
- 12. Dangers of Radon Gas
- 18. Beta Particles Represented by β (beta) (-) Charge, little mass, 100x faster than alpha Basically high-speed electrons Stopped by Aluminum Sheet. Changes a Neutron into a Proton
- 19. Beta Particles Equation Example:
- 23. Beta Decay Series While it may seem it is cycling around, the difference is it keeps losing mass, thus it turns from Ra-228 to Ra-224
- 24. Gamma Particles Represented by ɣ (gamma) Electromagnetic wave, no charge (neutral) or mass Great speed, high-energy, very dangerous High penetrating power Only lead can stop them
- 25. Radioactivity Alpha, Beta and Gamma Particles
- 27. Half-Life Half-life is a measure of the rate of decay of a radioactive element. It is the time it takes for half of the atoms to decay. Carbon-14 has a half life of 5730 years
- 28. Carbon-14 Dating
- 30. The lack of certain elements on Earth is related to their very short half-lives