Atoms

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

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

• negatrons 
• electrons 
• neutrons 
• protons 

The particles that are found in the nucleus of an atom are

• neutrons and electrons
• electrons only
• protons and neutrons
• protons and electrons

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

• nucleus 
• electron cloud
• core 
• center 

What is the overall charge of this atom?

• +3
• -3
• 0
• +1

What is the mass of an atom if it has 11 protons, 12 neutrons, and 11 electrons?

• 22
• 11
• 34
• 23

If an atom has 10 protons, 10 neutrons, and 10 electrons, what is the mass of the atom?

• 10
• 20
• 30

What subatomic particle(s) would be found orbiting the nucleus?

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

If an atom has 12 positively charged subatomic particles, which of the following must it also have to be considered a neutral atom?

• 12 neutrons
• 12 electrons
• 12 protons
• 24 protons and neutrons

What is the mass number of this atom?

• 1
• 3
• 4
• 7