atoms in the periodic table- Chelsea

A particle in the nucleus with a positive charge

The center and most important part of an atom

Atomic particle in the nucleus without an electric charge

Found in the electron cloud with a negative charge.

Area on a atom where you are likely to find electrons

Electron found in the outer most shell that determines the atoms chemical properties.

Properties of an element change with the atomic numbers of the elements.

Horizontal row in the periodic table

Vertical columns in the periodic table

Conducts electricity and heat and is shiny

Conducts heat and electricity poorly.

Substance that can conduct electricity under some conditions

Very reactive metals in group 1 of periodic table

Reactive metals that form basic oxides and can react with water

They mix with other elements to form coordination compounds

Non metallic elements that form to make salt

Gases of the periodic table that were thought to not form with anything else

An atom or molecule with a charge

The atomic number tells how many protons and electrons are in an element.

Tells how many neutrons are in an element. Subtract number from mass to find neutrons.

Two or more forms of the same element that have same amount of protons but different number of neutrons

The average of the protons and neutrons rest mass. AMU

Sum of the masses of the isotopes multiple by its natural abundance

The amount of pure substance containing the same as its chemical unit.