Download Chapter 4 Test Review

Chapter 4 Test Review
Test: Friday 11/22/2013
Summaries and Questions
• Due on Tuesday 11/26/2013
• I will not be here on Monday due to CHS
Pitt Labs
Things to know before Friday!
• Know all of the parts of the element that
appear on the periodic table. For example:
Scientist to know
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Democritus
Aristotle
Chadwick
Thomson
Rutherford
• **What were their contributions to the
atomic structure?**
Democritus
• first person to propose the idea that matter
was not infinitely divisible, but made up of
individual particles called atomos.
Aristotle
• disagreed with Democritus because he did
not believe empty space could exist.
John Dalton
• What were the flaws in Dalton’s Atomic
Theory?
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
Ernest Rutherford
• In 1911, Ernest Rutherford studied how
positively charged alpha particles interacted
with solid matter.
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.
Protons, Neutrons, &
Electrons…oh my!
Protons, Neutrons, & Electrons II
• How many electrons would Potassium have?
• What elements has 17 Protons?