Science 10/1/10

Bell Question:  Look at your notes and write down what you aren't sure of.
-  *cricket chirps*
Jk
The Definitions of:
-Element
-Compound
-Solution
-Mixture

HISTORY  LESSON

1880 -Thomson- Plum Pudding model of the atom

1920s- Rutherford- given credit for the positive nucleus- Nobel prize for his discovery.

 

1940s- Henry Chedwick- given credit for the neutron

1945- Niels Bohr- astronomer

 What we use today:

Bell Question Continued:

Element-an atom that cannot be broken down anymore than it is.

Mixture- a heterogeneous combination of compounds and molecules and elements.