Atoms and Elements

The smallest unit of an element that still has the properties of that element is?

• a substance
• a mixture
• a compound
• an atom

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 

Tags

NGSS.HS-PS1-8

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

• nucleus 
• electron cloud
• core 
• center 

Tags

NGSS.HS-PS1-8

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

• Proton
• Neutron
• Electron
• Quark

An atoms overall charge is 

• positive 
• depends on its mood 
• neutral 
• negative 

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

• 2
• 1
• 3
• 6

What does the 1.00794 stand for?

• Hydrogen
• atomic number
• atomic mass
• atomic explosion

Tags

NGSS.MS-PS1-1

• Periods

• Groups

• Periods

• Groups