Subatomic Particles
The charge of a proton
What is +1?
Represented by the number of protons in an element
What is the atomic number?
Horizontal categorization of the periodic table
What is a Period?
Used the term 'Atomos'
Who is Democritus?
Makes an isotope unstable
What is the ratio of protons to neutrons in the nucleus?
The location of the neutron
What is the nucleus?
An atom with the same number of protons but different number of neutrons
What is an isotope?
Vertical categorization of the periodic table
What is a Group?
Created the Plum Pudding Model
Who is JJ Thompson?
Type of decay that is stopped by paper
What is Alpha?
The mass of an electron
What is 0.005 (essentially 0)?
On the periodic table it is the weighted average of all the elements isotopes
What is the atomic mass?
First group on the periodic table
What is the Alkali Metals?
Conducted the Gold Foil Experiment
Who is Rutherford?
The type of decay that has a charge of 0
What is Gamma?
The three parts of an atoms
What is the proton, neutron, and electron?
What is the mass number?
Second group on periodic table
What is the Alkaline Earth Metals?
The men who discovered the proton, neutron, and electron, respectively.
Who is: Goldstein (proton), Chadwick (neutron), and Thompson (electron)
The time it takes for half of a radioactive sample to decay into the daughter product
What is half-life
Located between the nucleus and electron cloud
What is empty space?
a particle with a net charge (positive or negative) due to the number of protons not equaling the number of electrons
What is an ion?
Last group on periodic table
What is the Noble Gases?
Dalton's four main points of his theory
True or False. The shorter the half-life the more stable the isotope
What is false?