Atomic Structure

What is the center of an atom called?

• Electron cloud
• Proton field
• Nucleus
• Neutron shell

Tags

NGSS.HS-PS1-8

Which subatomic particle has a positive charge?

• Electron
• Neutron
• Proton
• Photon

Which subatomic particle is found outside the nucleus?

• Proton
• Neutron
• Electron
• Nucleon

What is the relative charge of a neutron?

• 1
• 0
• -1
• 2

What term describes atoms of the same element with different numbers of neutrons?

• Ions
• Isotopes
• Molecules
• Compounds

What determines the identity of an atom?

• Number of electrons
• Number of protons
• Number of neutrons
• Total mass

Which element has an atomic number of 1?

• Helium
• Hydrogen
• Lithium
• Oxygen

What is the atomic mass number of an atom with 6 protons and 6 neutrons?

• 6
• 12
• 18
• 24

What does the mass number of an atom represent?

• Number of electrons only
• Number of protons only
• Sum of protons and neutrons
• Sum of electrons and protons

Tags

NGSS.HS-PS1-8

What charge does a cation carry?

• Positive
• Negative
• Neutral
• None