History of the Periodic Table
This scientist put together the first successful periodic table
Who is Dmitri Mendeleev?
This chemical family is found in group 7 of the periodic table
What is the halogen family?
These particles are found in the nucleus
What are protons and neutrons?
These are the particles that make up an atom
What are protons, neutrons, and electrons?
These are the outer rings shown on a Bohr model
What are electron shells or energy levels?
This scientist is credited with creating the modern periodic table
This chemical family is known for having properties of both metals and nonmetals
What is the metalloid family?
This scientist proposed 4 postulates to explain atomic theory
Who is John Dalton?
This atomic particle has no charge
What is a neutron?
The number of electrons in the first energy level of a Bohr model
What is 2?
The reason why Mendeleev's periodic table was considered the first successful periodic table
What is the ability to predict properties of yet undiscovered elements?
This elemental family has a full outer shell of electrons
What is the noble gas family?
This is where the mass of the atom is held
What is the nucleus?
This is the place where electrons are found.
What is the electron cloud?
The number of electrons in the second energy level of a Bohr model?
What is 8?
This explains why Mendeleev's periodic table was organized by atomic mass rather than by number of protons.
What is atomic number was not discovered until after Mendeleev's death
This elemental family can form multiple charges of cations and is known for being highly conductive
What is the transition metal family?
This experiment and scientist proved the existence of a small, dense nucleus in the atom.
What is the gold foil experiment conducted by Ernest Rutherford?
This model of the atom was created after JJ Thomson discovered the electron
What is the plum pudding model?
The number of valence electrons in a neutral atom of Chlorine.
What is 7?
This is why placing argon before potassium contradicted Mendeleev's overall principle of organization for the periodic table
What is argon has a higher mass than potassium
This elemental family is known for being highly reactive with water
What is the alkali metal family?
These are the four postulates of Dalton's atomic theory
What are:
I. All matter consists of indivisible particles called atoms.
II. Atoms of the same element are identical in mass and properties.
III. Atoms cannot be created or destroyed.
IV. Compounds are formed by a combination of two or more different kinds of atoms.
This experiment and scientist proved the existence of the electron
What is the cathode ray experiment conducted by JJ Thomson?
The number of energy level in a neutral atom of Calcium
What is 4?