Name __________________________
Dr. Bernstein/Mrs. Fields
Date ______________
Chemistry
Introduction to Atoms Web Quest
Part I: A Brief History of the Atom
Click the following link: http://www.angelfire.com/alt2/atom/sci2.html
Use the information in this web page to complete in the History of the Atom Chart
History of the Atom Chart
Year
Scientist
Democritus
Antoine Levoisier
John Dalton
Michael Faraday
J.J. Thomson
Ernest Rutherford
Neils Bohr
What Are they Known For
Part II: Models of the Atom
. Click the following link: http://www.emsb.qc.ca/laurenhill/science/models.html
Answer the following questions.
1. Scroll down to JJ Thompson’s Model of the Atom. What “name” is given his model?
_________________. Draw a sketch of his model.
2. Scroll down the webpage. What are the four parts to Dalton’s Theory
1. _______________________________________________________________________
2. _______________________________________________________________________
3. _______________________________________________________________________
4. _______________________________________________________________________
3. What did Rutherford claim about the nucleus of the atom?
4. Complete this sentence about Bohr: Electrons can only occupy certain __________ around the
positive ______________.
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.
Part IV: What are the Parts of the Atom?
Click the following link: http://education.jlab.org/atomtour
Answer the following questions
1. How many naturally occurring elements are there? ______
Click the continue button.
Click the PROTON.
2. What did scientists discover in 1968? ______________________________________________
Click the NEUTRON
.
3. When were they first discovered? __________________
4. What did the scientists also learn about neutrons? _____________________________________
_______________________________________________________________________________
Click the ELECTORNS and complete this sentence:
5. It’s easy to step off the electrons from an atom and use them to create ________ ___________.
Part V: Common Nomenclature
Click the following link: http://education.jlab.org/qa/atoms_and_elements.html
Answer the following questions
So in summary: An element - a basic substance that can't be ___________. The atom is the smallest
amount of an ___________. A molecule contains two or more atoms that are __________ joined
together, while a compound is a substance that contains__________ than one _____________.