Horizontal rows

• Protons

• Valence Electrons

• Neutrons

• Groups

• Periods

The subatomic particle that has a positive charge

• Protons

• Valence Electrons

• Neutrons

• Groups

• Periods

Electrons in the outermost shell of an atom

• Protons

• Valence Electrons

• Neutrons

• Groups

• Periods

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Vertical columns also known as families

• Protons

• Valence Electrons

• Neutrons

• Groups

• Periods

The subatomic particle that has a neutral charge

• Protons

• Valence Electrons

• Neutrons

• Groups

• Periods

The number of protons in the nucleus of an atom is the __________________.

• atomic number

• atomic mass

• neutrons

• group number

As you move from left to right on the periodic table, the atomic numbers of the elements __________________.

• decreases

• increases

The _________________ is found by adding protons and neutrons.

• atomic mass

• atomic number

• period number

• valence electrons

The ____________ are located outside of the nucleus.

• electrons

• protons

• neutrons

The ____________ and ___________ are located inside of the nucleus.

• electrons; protons

• electrons; neutrons

• protons; neutrons

• protons; metals