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Protons make the element what it is !

- Composition Notebook Isotopes are atoms of the same element that have a different number of neutrons in their nuclei. . Protons make the element what it is !. Isotopes of an element will have the same number of protons but a different number of neutrons .

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Protons make the element what it is !

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  1. - Composition NotebookIsotopes are atoms of the same element that have a different number of neutrons in their nuclei.

  2. Protons make the element what it is ! • Isotopes of an element will have the same number of protons but a different number of neutrons. • The number of protons in the nucleus of an atom and is the same for all atoms of the same element.

  3. Mass Number • is the number of protons + the number of neutrons in the nucleus of an atom and will be different for each isotope of an element.

  4. Isotope classification • Isotopes can be classified as natural (found in nature) or man made (artificial or synthetic). • Isotopes can also be classified as stable or unstable

  5. Stable vs. Unstable • A stable isotope does NOT undergo radioactive (or nuclear) decay. • An unstable isotope undergoes radioactive (or nuclear) decay. Unstable isotopes are also known as radioisotopes or radionucleides

  6. Examples of Isotopes- atoms with different numbers of neutrons- naturally occurring isotopes • Hydrogen- 1 and Hydrogen -2 • Helium-3 and Helium-4 (one extra neutron) • Lithium-3 and Lithium-7 (4 extra neutrons) • Boron-10 and Boron-11 (one extra neutron) • Carbon-12, Carbon-13, Carbon-14 • Nitrogen-14 and Nitrogen-15 • Oxygen-16, Oxygen-17, and Oxygen-18 • Neon- 20, Neon-21, and Neon-22

  7. How are the carbon atoms different?

  8. Unstable Isotopes • Carbon-14 (two more neutrons than C-12) • Uranium-234, Uranium-235, Uranium-238

  9. Practice Drawing Isotopes Helium-3 and Helium-4 (one extra neutron) Lithium-3 and Lithium-7 (4 extra n

  10. Practice Drawing Isotopes Lithium-3 and Lithium-7 (4 extra neutrons) Boron-10 and Boron-11 (one extra neutron) Carbon-12, Carbon-13, Carbon-14

  11. Radioactivity • A nucleus of an atom is unstable and releases subatomic particles. • Radioactivity is a random process, meaning that it is physically impossible to predict whether or not a given atomic nucleus will decay and emit radiation at any given moment

  12. United Streaming ResourcesRadioactivity: Nuclear Disintegration and subatomic particlesRadium and Radioactivity 2 min clipWelcome to Discovery Education Player

  13. Follow Up Questions • What is an isotope? • What subatomic particle makes an atom an isotope? • Do isotopes have different numbers of protons?

  14. Follow Up Questions • What is radioactivity? • Where does radioactivity happen in the atom? • What is released when an atom decays? • What happens to the atom when it decays? Does it change?

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