The person that found out about "tiny fundamental particles of matter" and called them "atomas."
What is Democritus
100
The three different kinds of particles inside an atom
What is protons, neutrons, and electrons
100
The name of the rows on the periodic table
What is periods
100
The element in period 2, group 16
What is oxygen
100
The metalloid with 14 protons and electrons
What is Boron
200
The person that concluded that the atom is made up of smaller particles by doing an experiment with cathode rays and two charged plates.
Who is JJ Thompson
200
The place where protons and neutrons are found.
What is the nucleus
200
The name of the columns on the periodic table
What is groups/families
200
The element is period 6, group 15
What is Bismuth
200
The reason why the number of protons equals the number of electrons (when stable)
What is the negative charge of the electrons balances out the positive charge of protons
300
The person that discovered that there is a nucleus in the middle of the atom and that when alpha particles were shot through foil, some changed direction or even bounced backwards.
Who is Ernest Rutherford
300
The place where electrons are found
What is the electron cloud
300
The name of the first column in the periodic table
What is Alkali metals
300
The element with 7 neutrons
What is Nitrogen
300
The atoms of the same kind with different numbers of neutrons
What is isotopes
400
The person that discovered that electrons travel in a specific path around the nucleus based on their energy level.
Who is Niels Bohr
400
The place where electrons are sorted based on their energy levels
What is shells
400
The name of the last column in the periodic table
What is noble gasses
400
The element with 33 protons and electrons
What is Arsenic
400
The groups of elements are extremely explosive
What is Halogens and Alkali metals
500
The person who came up with the atomic theory and symbols for the elements in 1810
Who is John Dalton
500
The electrons in the outermost shell of the atom
What is valence electrons
500
The name of the columns #3-12 on the periodic table