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Chapter 16
Chapter 16, Section 1
| Question | Answer |
|---|---|
| Radioactivity | the process by which an unstable nucleus gives off nuclear radiation |
| Three types of radioactive decay | alpha, beta and gamma |
| Alpha decay | the release of an alpha particle from a nucleus |
| Mass number | the sum of the numbers of protons and neutrons in the nucleus of an atom |
| What two things are conserved in radioactive decay? | mass numbers and charge |
| What is beta decay | the release of beta particle from a nucleus |
| What is alpha particles | made up of two protons and two neutrons |
| What is gamma rays | form of light that has very high energy |
| What is gamma decay | the release of gamma rays from a nucleus |
| Name 3 symptoms of radiation sickness | fatigue, oss of appetite an dhair loss |
| What is radiation sickness | A single large exposure to radiation |
| What is half-life | The amount of time it takes one half of the nuclei of radioactive istopes to decay |
| What is the half-life of carbon-14? | 5,730 years |
| What is beta particle | Can be an electron or a positron |
| What is Isotopes | Atoms that have the same number of protons as other atoms of the same element do but that have different numbers of neutrons |
| What is nuclear radiation | High energy particals and rays tht are emitted by the nuclei of some atoms |
| What are tracers | Radioactive elements whose paths can be followed through a procdess or reaction |
Created by:
AEBerg
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