1. Chapter 4 Test Review
Test: Friday 11/22/2013

2. Summaries and Questions
Due on Tuesday 11/26/2013
I will not be here on Monday due to CHS Pitt Labs

3. Things to know before Friday!
Know all of the parts of the element that appear on the periodic table. For example:

4. Scientist to know Democritus Aristotle Chadwick Thomson Rutherford
**What were their contributions to the atomic structure?**

5. Democritus
first person to propose the idea that matter was not infinitely divisible, but made up of individual particles called atomos.

6. Aristotle
disagreed with Democritus because he did not believe empty space could exist.

7. John Dalton
What were the flaws in Dalton’s Atomic Theory?

8. JJ Thomson
measured the effects of both magnetic and electric fields on the cathode ray to determine the charge-to-mass ratio of a charged particle, then compared it to known values.
Plum Pudding Model

9. Ernest Rutherford
In 1911, Ernest Rutherford studied how positively charged alpha particles interacted with solid matter.

10. James Chadwick
James Chadwick received the Nobel Prize in 1935 for discovering the existence of neutrons, neutral particles in the nucleus which accounts for the remainder of an atom’s mass.

11. Protons, Neutrons, & Electrons…oh my!

12. Protons, Neutrons, & Electrons II
How many electrons would Potassium have?
What elements has 17 Protons?