1. ELEMENTS, CHEMICAL SYMBOLS AND THE PERIODIC TABLE

2. Chemical Symbols  Chemical Symbol:  Over 115 elements  Instead of writing out full name of element scientists use symbol  Symbols consist of 1 or 2 letters from latin origin.  If only one letter then it is capitalized. If two letters, first is capitalized the second is not.  Ex. N = Nitrogen, Na = Sodium

4. Key terms Chemical Properties  Description of the ability of one chemical to react with another to form new substances Ex. reactivity Metals 1. Shiny 2. Malleable 3. Ductile 4. Conductors of heat and electricity 5. Hard Non-metals 1. Brittle or 2. Gases at room temperature

5. Some Elements  Hydrogen  Take notes on page 45 describing the properties of hydrogen.  The Hindenberg

7. Elements cont…  Pg 48. Act 2-1B

8. Elements cont.  Oxygen  Continue with notes  Sodium

9. Last few elements  Chlorine  Mercury  Silver  Silicon