atoms

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

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

• nucleus 
• electron cloud
• core 
• center 

an atom with atomic number 6 would have how many protons 

• 6
• 12
• 3
• cannot be determined 

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

• negatrons 
• electrons 
• neutrons 
• protons 

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

• Proton
• Neutron
• Electron
• Quark

What two particles determine the mass number?

• Protons and electrons

• Electrons and neutrons

• Protons and neutrons

Most of the mass of an atom is found in the ______.

• nucleus

• proton

• electron cloud

• isotope

An atoms overall charge is 

• positive 
• depends on its mood 
• neutral 
• negative 

The smallest particle of any particular type of matter is known by which of the following terms?

• Compound
• Atom
• Chemical
• Element

If an atom has 3 electrons, how many protons does it have?

• 1
• 2
• 4
• 3