1 / 10

Notes: Monday, October 29, 2012

Notes: Monday, October 29, 2012. Topic: Ions and Isotopes EQ: How do the structures of atoms differ?. Ions. Ion: An atom or group of atoms that has lost or gained one or more electrons and has a negative or positive charge When an atom loses an electron it becomes positively charged

shino
Télécharger la présentation

Notes: Monday, October 29, 2012

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Notes: Monday, October 29, 2012 Topic: Ions and Isotopes EQ: How do the structures of atoms differ?

  2. Ions • Ion: An atom or group of atoms that has lost or gained one or more electrons and has a negative or positive charge • When an atom loses an electron it becomes positively charged • When an atom gains an electron it becomes negatively charged

  3. Examples • Group 1 elements will more likely lose one electron to become an ion • Lithium will sometimes lose an electron to become a positive lithium ion • Group 17 elements will more likely gain one electron to become an ion. • Fluorine will sometimes gain an electron to become a negative fluorine ion.

  4. Concept Check • Magnesium will lose two electron to become an ion. What is its total charge?

  5. Calculate the number of protons in these elements Phosphorus Calcium Palladium Calculate the number of neutrons in these elements Phosphorus Calcium Palladium Concept Review

  6. Isotopes • Isotope: an atom that has the same number of protons as other atoms of the same element, but that has a different number of neutrons.

  7. Some commonly used Isotopes in Biology. Common Isotopes

  8. Isotopes ideas • Most isotopes are within 1 or 2 of the common atomic mass Hydrogen – 1 Oxygen – 16 Carbon – 12 Phosphorus – 31 Sulfur – 32 Cobalt – 59 Hydrogen – 2 Oxygen – 18 Carbon – 14 Phosphorus – 32 Sulfur – 33, Cobalt – 60

  9. Are these regular or isotopes? • I – 131 • Ni – 59 • Sr – 90 • Au – 197 • Hg – 201 • Tc – 99 • Ca – 45 • Na - 24

  10. Reflection • How do the structures of atoms differ?

More Related