Moles

Today In Class: 

1. Took our last naming compounds quiz!                          

2. Received previous labs.

3. Went over moles.

4. Gathered Data for a mole Lab/Activity

Moles: 

A mole is a counting unit used in chemistry. It is like a dozen, ream, etc. Amedeo Avagadro was the scientist who came up with this unit. A mole has a very large quantity, if you had a mole of soft drink cans, it would cover the earth with a depth of over 200 miles! Abbreviated as mol.

Avogadro's Number Conversion Factor:

1 mole = 6.02 x 10^23 particles.   

 A particle could be an atom or a molecule say pay close attention to your problem!

In order to solve problems with moles we have to use our old friend Dimensional Analysis!!!

Ex. How many moles are in 7.8 x 10^24 atoms of carbon?

7.8 x 10^24 atoms of carbon x                1mole                   =     13 moles.

                       1                          6.02 x 10^ 23 particles          

Homework:

1. Avogadro's Number Worksheet

2. Avogadro's Number Activity   (Fill out in the lab book)

The next scribe will be Claire. F.