Review

What number indicates the nucleus?

• 1
• 2
• 3
• 4

Where is most of the mass in an atom located?

• in the nucleus
• in the protons
• in the neutrons
• in the electrons

Each element is unique and different from other elements because of its 

• atomic number
• number electrons
• mass number
• average atomic mass

The particles with no charge in an atom are the _______.

• electrons
• neutrons
• protons
• protons and neutrons

The positively charged particles of an atom are the ________.

• electrons
• protons
• neutrons
• protons & neutrons

• 2
• 3
• 5

Tags

NGSS.MS-PS1-1

Noble gases have _____ valence electrons shells.

• empty
• partially full
• full

• 1
• 2
• 3
• 4

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

• 6
• 7
• 8
• 9

Tags

NGSS.MS-PS1-1

Elements in the same column of the periodic table always have the same # of _______ as one another.

• Protons
• Neutrons
• Electrons
• Valence Electrons