Basics of Atomic Theory
Positively (+) Charged subatomic particle
Proton
Who discovered the Atom?
John Dalton
Who is the “Father of the Periodic Table?”
Mendeleev
1st group
Alkali Metals
3 characteristics of metals
ductile, malleable, shiney, conduct heat, conduct electricity
Location of protons & neutrons in the atom
nucleus
Created the "plum pudding"/"chocolate chip cookie" model of the atom.
J.J Thomson
The Periodic Table was first organized by....
Atomic Mass
2nd Group
Alkali Earth Metals
Non-metals are brittle
True/False
True
6
Created the "solar system" model of the atom, where electrons move around nucleus in energy levels.
Bohr
Elements in the same row (period) have the same number of...
energy levels/shells/orbitals
Located between metals and nonmetals
metalloids
Metalloids are often used in computer chips because they are...
semi-conductors
How is atomic mass found?
Protons + Neutrons
Discovered neutral (0) particles he called neutrons
1.Chadwick
2. Bohr
3. Dalton
4. Democritus
Chadwick
Groups 3-12
Transition Metals
What are Valence Electrons?
Electrons on the outermost level
What is an Isotope?
Different versions of an atom because of a different number of neutrons
What is Modern Atomic Theory?
Electron Cloud Theory
What was Mendeleev able to do with his periodic table?
Predict unknown elements
18th Group
Noble Gases
Noble Gases