General Flashcards
Who are the Fathers of the Atomic Theory?
Dalton
Thompson
Milikan
Rutherford
What did Dalton do?
Said that atoms of one element are different than atoms of another element
Compounds are collections of elements
What did Thompson do?
Discovered the election and the mass-to-charge ratio
What did Milikan do?
Discovered the election mass and charge.
Figured out the mass, and thus, the charge through Thompson’s ratio
What did Rutherford do?
Found out that atoms are mostly empty space with a dense nucleus with the alpha particles at gold foil experiment, disproving the plum pudding model.
What is the Coulomb charge of a single Proton or Electron?
+/- 1.602 X 10^-19 Coulombs
What are Group 1 Elements called?
Alkali Metals
What are Group 2 Elements called?
Alkaline Earth Metals
What are Group 13 Elements called?
The Boron Group
What are Group 14 Elements called?
The Carbon Group
What are Group 15 Elements called?
Pnitcogens
The term pnicogen are derived from two words: pnicto - “choking gas” and gen - “producer.”
What are Group 16 Elements called?
Chalcogens
The term chalcogen is derived from the Greek words: chalcos - “ore” and gen - “producer.”
What are Group 17 Elements called?
Halogens
The term halogen is derived from the Greek words: halo - “sea salt” and gen - “producer.”
What are Group 18 Elements called?
Noble Gases
What are ions with a positive charge called?
Cations
What are ions with a negative charge called?
Anions
