Atoms and Elements

Mass of protons and neutrons in an atom. Number of Protons added to the number of neutrons equals the atomic mass.

• Atomic Mass

• Atomic Number

• Atom

• Electron

• Neutron

A subatomic particle that has a positive charge and that is found in the nucleus of an atom. This is the same as the atomic number.

• Atomic Mass

• Proton

• Atom

• Electron

• Neutron

The center of an atom, which contains the protons and neutrons

• Element

• Atom

• Proton

• Nucleus

• Electron

The number of protons in an atom. How atoms are identified and ordered on the periodic table.

• Atomic Number

• Atom

• Atomic Mass

• Element

• Electron

A table that classifies elements by their physical and chemical properties

• Periodic Table of Elements

• Element

• Dimitri Mendelev

• Molecule

Created the Periodic Table of Elements

• Dimitiri Mendelev

• Element

• Molecule

• Proton

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

• Proton

• Neutron

• Electron

• Nucleus

A subatomic particle that has a negative charge and is found outside of the nucleus of the atom.

• Proton

• Neutron

• Electron

• Nucleus

A group of atoms bonded together

• Proton

• Molecule

• Atom

• Nucleus

A pure substance made of only one kind of atom. Carbon is one type of element.

• Proton

• Neutron

• Molecule

• Element