Atoms, Isotopes, Elements

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 

How many protons does this atom have?

• 2.5
• 6
• 5
• 10.811

Tags

NGSS.MS-PS1-1

If the number of protons equal the number of _____, the atom will have no charge

• protons
• neutrons
• electrons
• nucleus

An atom is made up mostly of

• protons
• gravity
• empty space
• electricity

Tags

NGSS.MS-PS1-1

An element is made up of only one kind of _____.

• isotope
• plastic
• atom
• metal

The atomic number tells you what?

• number of electrons
• number of protons
• number of neutrons
• both electrons and protons in an atom.

Where is most of the mass of an atom located?

• In the nucleus
• Electron cloud
• In the electron
• Evenly spread throughout the atom