Atomic Structure

Which subatomic particle has a positive (+) charge?

• Neutron
• Proton
• Electron

Which subatomic particle has a negative (-) charge?

• Proton
• Electron
• Neutron

Which subatomic particle has a neutral or no charge?

• Proton
• Electron
• Neutron

Where is the nucleus located in an atom?

• In the electron shells/orbitals

• In the center of an atom

The atomic number ALWAYS tells you the number of ____ in an atom.

• Electrons

• Protons

• Neutrons

• Protons + neutrons

Answer explanation

It will OFTEN tell you the number of electrons in an atom as well, but sometimes an atom will gain or lose electrons.

Which two subatomic particles make up the nucleus of an atom?

• Protons and Electrons
• Neutrons and Electrons
• Electrons and Protons
• Protons and Neutrons

Tags

NGSS.MS-PS1-1

If an atom has the same number of protons and electrons, the atom's charge will be:

• positive (+)

• negative (-)

• neutral (no charge)

• ion

The ______ is the number of protons in an element.

• Atomic Mass
• Atomic Symbol

• Valence Electrons
• Atomic Number

What is the atomic mass?

• the number of electrons

• the number of protons and neutrons
• the number of neutrons
• the number of protons and electrons

Tags

NGSS.MS-PS1-5

What is the atomic number of this atom?

• 1
• 3
• 4
• 7

Tags

NGSS.MS-PS1-1