Atoms and Perodic Table Megan Mayer

A particle that has a positive charge and that is found in the nucleus of an atom

An atoms central region which is made up of protons and neutrons

A particle that has no charge and that is found in the nucleus of an atom

A particle that has a negative charge

A region in a atom where there is a high probability of finding electrons.

An electron that is found in the outer most shell of an atom and determines the atoms chemical properties

The law that repeats Chemical and physical properties of elements change on the periodic table with the atomic numbers

A horizontal row of elements on the periodic table

A vertical column of the elects on the periodic table

A atom or group of atoms that has lost or gained one or more electrons and ha s a negative or positive charge

The number of protons in the nucleus of an atom

The sum of the numbers of protons and neutrons in the nucleus of an atom

An atom that has the same number of protons as other atoms of the same element do but has a different amount of neutrons

A unit of mass that describes the mass of an atom or molecule, it’s exactly one twelfth of a carbon atom with mass number of 12

The weighted average of the masses of all naturally occurring isotopes of an element

An element that is shiny and conducts heat and electricity well

An element that conducts heat and electricity poorly

An element or compound that conducts electric currents better than an insulator but not as good as a conductor

One of the elements of Group 1 of the periodic table

One of the elements of Group 2 of the periodic table

One of the elements of Groups 3-12 of the periodic table

One of the elements of Group 17 of the periodic table

An unreactive element of group 18 of the periodic table

The Si unit used to measure the amount of a substance whose number of particles is the same as the number of atoms