Science 7 Chapter 3 Vocab

Front

Smallest particle considered an element

Back

Atom

Front

Negatively charged particles in an atom

Back

Electron

Front

Small area in the center of an atom containing protons and neutrons

Back

Nucleus

Front

Positively charged particles in the nucleus

Back

Protons

Front

Relative position of an electron in the cloud

Back

Energy Level

Front

Particle in nucleus, no charge

Back

Neutron

Front

Number of protons in nucleus

Back

Atomic Number

Front

Atoms with the same protons but different neutrons

Back

Isotopes

Front

Number of protons and neutrons in an atom

Back

Mass number

Front

Electrons in the outermost shell

Back

Valence electrons