6.02x10^23

     The mole is the SI base unit that scientist use to measure a substance. But it is not helpful for cake baking. The mole of any substances contains 6.02x10^23 representative particles. Some of these particles are atoms, molecules, formula units, and so on. Amedeo Avogadro was the one who started the mole in the year 1811.


      In our lab we had to figure out what element each cup was. We had to do this by finding the atomic mass for each of the different cups. We weighed the number of grams that the cup held. Then we took the number of grams and divided by the number of moles and got the atomic mass of an element. We then used our periodic table to figure out which element we had. And that is how we found out the element. Down below is a chart where we check if our element was correct.
9.44 c
31.53 g
53.90 d         Here is the number of grams we got for each letter.
15.10 f
28.30 b
45.55 h
20.74 e
25.80 j          
32.60 I
4.87 a

WorkSheets

Here is a worksheet that we did on Ionic Bonding and Ionic Compound Formula.

This one is on metallic bonds and metal properties.

We did a lab and here are the results to it. 

 On this work sheet we were finding out if one was a ionic, covalent, or both.

The Periodic Table

     In 1869, Dmitri Mendeleev published the periodic table.  This table is a visual creation of the periodic law. It states the certain properties of elements, arranged by the atomic number. They arranges elements into vertical columns which are also know as groups and horizontal rows which are know as periods.

     Here is a worksheet that we did on the periodic tables. We found the elements with the highest and lowest boiling point, melting point, density, atomic radius, electronegatvity and the number of isotopes in each different row.

Reaction types

Ionic compounds

Ionic Compounds on Prezi

Mole Day

    Amedeo Avogadro was born August 9,1776 in Turin, Italy. He was born to a family of lawyers. He followed his family's footsteps and graduated in ecclesiastical law at age 20 and began to practice law. But he was also interested in the natural sciences and in 1800 he began private studies in physics and mathematic. In 1809, he started teaching the natural sciences in a liceo in Vericelli. It was in Vericelli that Avogadro wrote a memoir in which he declared the hypothesis that is now known as Avogadro's law. In 1820, Avogadro became the first chair of mathematical physics at Turin University. He had six children and was reputed to be a religious man and also a discreet lady's man. He died July 9,1856.

Avogadro's law states that equal volumes of gases, at the same temperature and pressure, contain the same number of molecules. One of the most important contributions of Avogadro's work was his resolution of the confusion surrounding atoms and molecules. Avogadro believed that particles could be composed of molecules and that molecules could be composed of still simple units, atoms. The number of molecules in a mole was termed Avogadro's number in honor of Avogadro's theories. Avogadro's number has been experimentally determined to be 6.o23x10^23 molecules per gram-mole.


Here is our mole that we have done for this day. 

Conductivity Lab