Groups of the Table
The most reactive Group on the periodic table.
What is Group 1: Alkali Metals?
What did Democritus discover about the atom.
What is Atoms are undividable?
A subatomic particles that is positively charged and location in the nucleus at an atom.
What is a Proton?
Periodic Means...
The four forces of the atom.
What is Gravitational force, Electromagnetic force, Strong force, and Weak force?
This Group 17 family includes highly reactive nonmetals such as fluorine and chlorine.
What are the halogens?
This scientist conducted the gold foil experiment that led to the discovery of the atomic nucleus.
Who is Ernest Rutherford?
what is a unit of mass that describes the mass of an atom or molecule?
What is Atomic mass unit
(A.M.U)
How did Henry Moseley fit the pattern in Medeleev's Periodic Table?
What is Increasing of Atomic Number?
The most commonly known force in the atom.
What is Gravitational force?
This Group 18 family is known for being chemically unreactive and includes helium and neon.
What are the noble gases?
This scientist proposed that electrons orbit the nucleus in specific energy levels.
Who is Niels Bohr?
Subatomic particle that has nearly the same mass as a Proton, but has no electric charge.
What is a neutron.
These two rows are typically placed at the bottom of the periodic table to keep it compact.
What are the lanthanides and actinides?
Electromagnetic force does this.
What is holds the electrons around the nucleus?
This group contains elements that have 5 valence electrons, including nitrogen and phosphorus.
What is the nitrogen group (Group 15)?
This atomic model, proposed by J.J. Thomson, described electrons embedded in a positively charged sphere.
What is the Plum Pudding Model?
The total number of protons and neutrons in an atom's nucleus is known by?
What is the mass number.
Mendeleev organized the elements according to their properties playing what game?
What is Chemical Solitaire?
This force is responsible for radioactive decay and can change a neutron into a proton inside an atom’s nucleus.
What is weak force?
These two rows, placed below the main periodic table, are known collectively as the f-block elements.
What are the lanthanides and actinides?
What was Dalton's Atomic Theory?
All Substance are made of atoms, Atoms are small particles that cannot be created, divided, or destroyed
Atoms of the same element are exactly alike, and atoms of different elements are different.
Atoms join with other atoms to make new substances.
These are atoms of the same element that have different numbers of neutrons.
What is an isotope.
This subatomic particle’s discovery led to reorganizing the periodic table by atomic number.
What is proton?
This force holds protons and neutrons together in the nucleus of an atom, even though protons repel each other.
What is strong force?