Atoms and the Periodic Table

An _____ is matter that is composed of one type of atom.

Elements in the same group have similar __________.

The area around the nucleus of an atom where the atom's electrons are most likely to be found.

_______ are neutral particles with no electrical charge.

The _____ is the positively charged center of the atom that holds protons and neutrons.

An ___ uses the symbol for the element and dots representing the number of electrons in the element's outer energy level

Mendeleev created an organized table of elements called the _________.

The ________ of an atom is the sum of the protons and neutrons in that atom.

The number of protons in an atom's nucleus is also the _______.

An _____ is the smallest particle of an element that still retains the properties of the element.

A particle that surrounds the center of an atom and has a charge of 1-.

An atom of the same element that has a different number of neutrons.

A _______ is a horizontal row in the periodic table.

Atoms are composed of each of the following except _______.

A ___ is a positively charged particle inside the nucleus of an atom.

The periodic table is arranged in the following regions except _______.

The periodic table is arranged by increasing ____________.

Vertical columns in the periodic table are called ______ or families.