Hi, I am the Atom

Directions - Part I – A brief History of the Atom

 

Click the following links:  http://www.timetoast.com/timelines/atomic-scientist and http://ed.ted.com/lessons/the-2-400-year-search-for-the-atom-theresa-doud

Use the information in this web page to fill in your History of the Atom Timeline.  There are many additional scientists that contributed to the atomic model. I only expect you to know about six of them.

 

History of the Atom Timeline

 

	1	2	3	4	5	6
Date:	400 BC		1897	1911		1930
Scientist:		John Dalton			Niels Bohr

Directions - Part II – Models of the Atom

 

Click the following link:  http://www.universetoday.com/60058/democritus-atom/

 

1.  Where was Democritus from? ____________________________

 

2.  Why is he important with regard to atomic theory? _________________________________

 

 Click the following link: http://www.iun.edu/~cpanhd/C101webnotes/composition/dalton.html

 

1. What are the four parts to Dalton’s Theory

 

•  
•  
•  
•  

 

2. Why is he important with regard to atomic theory? _________________________________

 

Click the following link: http://education-portal.com/academy/lesson/early-atomic-theory-dalton-thompson-rutherford-and-millikan.html

 

1. What did JJ Thomson discover? _____________________________________

 

2. What was the name of the equipment (experiment) he did? _________________________________

 

3. What “name” is given his model _______________________  .   Describe his model in the space below.

 

 

4.  What did Rutherford discover? ________________________________

 

5. What experiment did he do? ______________________________

 

6. Complete this statement.  Rutherford claimed that this also shows that the atom consists mostly of

 

____________________ and that all the ___________charge is not evenly spread throughout the atom but

 

instead squished into a teeny tiny ________________ in the _____________of the atom.

 

 Click the following link: http://www.iun.edu/~cpanhd/C101webnotes/modern-atomic-theory/Bohr-model.html

 

1. Bohr’s model proposed that electrons:

 

1. ______________________________________________________________________________

 

1. _______________________________________________________________________________

 

1. _______________________________________________________________________________

 

 

Click the following link: http://www.colorado.edu/physics/2000/quantumzone/schroedinger.html

 

1. How is Schrodinger’s model DIFFERENT from Bohr’s? _________________________________

 

___________________________________________________________________________________

 

2. Can an electron be found in an exact spot within an atom? ____________________

 

Directions - Part III – What is an Atom?

 

Click the following link:  http://www.qrg.northwestern.edu/projects/vss/docs/Propulsion/1-what-is-an-atom.html

 

Read the top paragraph (only) and answer the following questions:

 

1. Everything in the universe (except energy) is made up of ______________________ .

 

2. Therefore everything in the universe is made up of ___________________.

 

3. An atom itself is made up of three tiny kinds of particles called subatomic particles:  ___________, 

 

________________  and  __________________ .

 

4. The protons and the neutrons make up the ________________ called the nucleus.

 

5. The _____________________ fly around above the nucleus in a small cloud.

 

6. The electrons carry a ________________ charge and the protons carry a ___________________charge.

 

7. In a normal (neutral) atom the number of protons _____________________ the  number of electrons.