Chemistry Unit Assessment

The outer area of the atom is called the

• nucleus
• electron cloud
• neutron
• electron

The particle found in the electron cloud is the

• nucleus
• electron cloud
• neutron
• electron

All matter is made of what ?

• energy 
• atoms 
• electrons 
• compounds 

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

Tags

NGSS.MS-PS1-1

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

• 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 

What is the atomic number for an element with three protons?

• 2
• 1
• 3
• 6

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

• Proton
• Neutron
• Electron
• Quark

Tags

NGSS.MS-PS1-1

What is the atomic mass of "F"?

• 9
• 18
• 17
• 19