1 / 9

Periodic table 5

Periodic table 5. Isotopes pp 116-119. Review of Atomic Structure. Nucleus Protons have a positive (+1) charge Neutrons have no charge Electrons Electrons have a negative (-1) charge Much smaller mass Located outside the nucleus. Protons.

alka
Download Presentation

Periodic table 5

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. Periodic table 5 Isotopes pp 116-119

  2. Review of Atomic Structure • Nucleus • Protons have a positive (+1) charge • Neutrons have no charge • Electrons • Electrons have a negative (-1) charge • Much smaller mass • Located outside the nucleus

  3. Protons • When you change the number of protons, you change the element. • The atomic number (Z) is the whole number on the periodic table. • Hydrogen Z = 1 • Calcium Z = 20 • What is the atomic number of Silicon? • Oxygen? • How many protons does Magnesium have?

  4. Electrons • A neutral atom has the same number of electrons as protons. • Z x (+1) + Z x (-1) = 0 • When an atom gains or looses electrons, it has a charge. It is called an ion. • The monatomic ion forms based on its valence. • They want the “easiest” way to have 8 in its outer shell. • The valence of Sodium (Na) is 1. What Ion will it form?

  5. Neutrons • All atoms of the same element will have the same number of protons. (atomic number, Z) • Atoms of the same element may have a different number of neutrons. • If you change the number of neutrons, you change the: • massnumber of the element • The isotope of the element

  6. Vocabulary • Mass Number – the number of protons plus the number of neutrons • Isotope – an atom that has the same number of protons but a different number of neutrons

  7. Isotopes of Hydrogen

  8. Isotope Symbols

  9. Isotopes of Carbon

More Related