Atomic Structure

The center of an atom is known as the

• nucleus

• electron cloud

• neutron cloud

• mass circle

Tags

NGSS.HS-PS1-8

Which subatomic particle has a positive (+) charge?

• Neutron
• Proton
• Electron

True or False - Protons and Neutrons have about the same mass.

• True - They have about the same mass
• False - They do not have about the same mass

Which subatomic particle has a negative (-) charge?

• Proton
• Electron
• Neutron

Which subatomic particle has a neutral or no charge?

• Proton
• Electron
• Neutron

Which letter represents a proton?

• A
• B
• C
• D

Tags

NGSS.MS-PS1-1

Which letter represents a neutron?

• A
• B
• C
• D

Tags

NGSS.MS-PS1-1

Which letter represents an electron?

• A
• B
• C
• D

Tags

NGSS.MS-PS1-1

Which letter represents the nucleus?

• A
• B
• D
• E

Tags

NGSS.HS-PS1-8

The atomic number of an atom is the number of 

• protons in its electron cloud
• protons in its nucleus
• neutrons in its nucleus
• electrons and neutrons in the nucleus