Atomic Structure Basics

What two sub-atomic particles are inside the nucleus of the atom? 

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

Tags

NGSS.MS-PS1-1

Which sub-atomic particle is the smallest?

• Electron
• Neutron
• Proton
• Nucleus 

What charge is an proton? 

• Positive
• Negative
• Neutral
• Positive or Negative 

Tags

NGSS.HS-PS2-4

What is the neutron? 

• A negatively charged particle outside the nucleus 
• A positively charged particle inside the nucleus 
• A particle without a charge inside the nucleus 
• A positively charged particle outside the nucleus 

Tags

NGSS.HS-PS1-8

Which subatomic particles contribute the most to the mass of an atom?

• Protons, Neutrons, Electrons
• Protons only
• Protons and Electrons
• Protons and Neutrons

An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.

• 20
• 10
• 5
• 25

Tags

NGSS.MS-PS1-1

What is the atomic number of the atom pictured? 

• 9
• 10
• 18
• 19

Tags

NGSS.HS-PS1-1

What charge does the nucleus have and why?

• positive - the neutrons do not have a charge
• positive - the neutrons and protons are positively charged particles
• neutral - the neutral charge dominates the positive charge
• neutral - electrons cancel out the positive charge of the atom

How many neutrons does the isotope of lithium have?

• 8
• 3
• 4
• 5

Tags

NGSS.HS-PS1-8

What does the ATOMIC MASS tell us about an atom?

• Protons + Neutrons
• Protons + Electrons
• Neutrons + Electrons