2023 Physical Science Chemistry Review

A particle that moves around the nucleus is a(n)...

• Proton
• Neutron
• Electron
• Quark

Particles in an atom that are neutral and have no charge are 

• negatrons 
• electrons 
• neutrons 
• protons 

the central region of an atom where its neutrons and protons are is its 

• nucleus 
• electron cloud
• core 
• center 

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

Which of the following has all of the subatomic particles that make up an atom?

• Protons, Nucleus, Electrons
• Neutrons, Nucleus, Protons
• Electrons, Quarks, Protons
• Electrons, Protons, Neutrons

An atom has an atomic number of 15 and a mass number of 31. How many protons are there in the atom?

• 15
• 31
• 16
• 47

An atom has an atomic number of 30 and a mass number of 65. How many neutrons are in the atom?

• 30
• 65
• 35
• 95

What is the Atomic Number?

• 7
• 6.941
• 3
• 6

How many Electrons are in a neutral atom of Lithium?

• 3

• 6

• 7

• 6.941

The atomic number of an atom is _____________________.

•  The mass of the atom
• The number of protons added to the number of neutrons 
• The number of protons 
• Negatively charged