Atomic Theory
Who discovered the atom
Dalton
what is hydrogens atomic number
1
What are the 3 phases of matter
Solid liquid gas
What is a positive charged particle called
Proton
Who invented the Bohr model { First Name as well}
Niels Bohr
Who discovered the nucleus
Rutherford
Number of neutrons in potassium
20
Solid
What is a negatively charged particle
electron
What subatomic particles revolve around the nucleus
Electron
What did the cathode ray discover
the electron a negatively charged subatomic particle
what periodic family has neutral ion charges
Noble Gases
What Phase of matter takes the shape of it's container but not the volume
liquid
The nucleus of an atom contains what subatomic particles
proton and neutron
What is the circular path that electrons follow around the nucleus called
orbit
What year did Dalton discover the atom
1803
What is the most unstable family
Alkali Metals
Which Phase of matter doesn't have definite volume or a definite shape
Gas
What was the nickname for Thomson's model that explained how electrons are distributed in a positively charged sphere
Plum Pudding Model
What is a valence electron
The electrons on the outermost shell
When did Rutherford win his Nobel Prize
1908
What Element has an unknown atomic mass
Ununseptium
How are gas particles arranged
Widely spaced and randomly arranged
What is it called when electrons move between energy levels.
Quantum Leap
What year was the Bohr model created
1913