Atoms and Elements Vocab Review

Electrically neutral particle inside of the nucleus of an atom

• Proton

• Neutron

• Electron

• Isotope

Organized list of all known elements that are arranged by increasing atomic number and by changes in chemical and physical properties.

• Atomic model

• Periodic table

• Scientific method

• CER

Particle in the nucleus with a positive charge of +1

• Electron

• Proton

• Neutron

• Ion

The small, positively charged center of an atom, contains protons and neutrons

• Electron cloud

• Element

• Orbital

• Nucleus

Particle of matter that makes up protons and neutrons

• Electron

• Element

• Quark

• Isotope

Atom of an element that has a specific number of neutrons

• Isotope

• Ion

• Newtonian

• Positron

The sum of the number of protons and neutrons in an atom's nucleus

• Quark

• Mass number

• Atomic number

• Electron cloud

Weighted-average mass of an element's isotopes according to their natural abundance.

• Average atomic mass

• Potential mass

• Metalloids

• Atomic mass unit

Substance with atoms that are all alike

• Ion

• Nucleus

• Quark

• Element

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

• Ecliptic

• Electron cloud

• Circuit

• Focal point