C


 * Name: Carbon

Origin of name:** from latin word //carbo// (coal)


 * Discovered by:** known to the ancients


 * Date of Discovery:** unknown


 * Isotopes:** 13; C12 and C13 are stable


 * Group:** Non-metal


 * Atomic Weight:** 12.011


 * Number:** 6


 * Symbol: C**

Isotope Carbon-14 is used to determine the age of carbon-rich materials up to 60,000 years old. A formula to calculate how old a sample is by carbon-14 dating is:
 * Interesting Fact:**

where ln is the natural logarithm, Nf/No is the percent of carbon-14 in the sample compared to the amount in living tissue, and t1/2 is the half-life of carbon-14 (5,700 years). media type="youtube" key="31-P9pcPStg" height="385" width="480"
 * t = [ ln (Nf/No) / (-0.693) ] x t1/2**
 * Visual that represents this element:**
 * Multimedia that represents this element:**

[|Lesson Plan for Carbon Dating]
 * What lesson or lab would you use to illustrate this element to a class?**