1 / 6

Symbols FOR THE ELEMENTS

Section 6.1 (pages 192 to 197). Symbols FOR THE ELEMENTS. Naming Elements. First chemist to report a new element had the right to name it. Ex 1: The famous Physicists/Chemist Marie Currie discovered polonium. She named it after the country she was born in, Poland.

morna
Download Presentation

Symbols FOR THE ELEMENTS

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. Section 6.1 (pages 192 to 197) Symbols FOR THE ELEMENTS

  2. Naming Elements • First chemist to report a new element had the right to name it. • Ex 1: The famous Physicists/Chemist Marie Currie discovered polonium. She named it after the country she was born in, Poland. • Ex 2: Uranium was named after Uranus.

  3. Invention of Chemical Symbols • Swedish chemist JonsJakob Berzelius was the 1st to propose the system for naming chemicals in which we still use today.

  4. Universal Symbols • Although the spelling and pronunciation of elements differ from country to country, the symbols used to represent each element does not. • Regardless of where you are in the world, hydrogen is represented by “H” likewise helium by “He”. (refer to table 6.1 on p. 192).

  5. Understanding Chemical Formulas for Compounds • A chemical formulauses symbols and numbers to represent the composition of a pure substance. • Ex: The chemical formula for pure water is H20 meaning that there are 2 hydrogen atoms for every 1 oxygen atom.

  6. Composition of a Molecule • A molecule is the smallest independent unit of a pure substance. They are usually a cluster of atoms bonded together. • Ex: A water molecule (chemical formula: H20) is made up of 3 atoms: 2hydrogen atoms and 1 oxygen atom.

More Related