What is the number of protons that the element in this image contain?

• 14
• 7
• 15
• 18

What is the atomic mass of "F"

• 9
• 18.9984
• 18
• Fluorine

all matter is made of what 

• energy 
• atoms 
• electrons 
• compounds 

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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 

Tags

NGSS.HS-PS1-8

an atom with atomic number 6 would have how many protons 

• 6
• 12
• 3
• cannot be determined 

Tags

NGSS.MS-PS1-1

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

• negatrons 
• electrons 
• neutrons 
• protons 

An atoms overall charge is 

• positive 
• depends on its mood 
• neutral 
• negative 

Tags

NGSS.MS-PS2-3

Which of the following is a negatively charged subatomic particle?

• Electron
• Proton
• Neutron
• Quark

The atomic number of an elements is the total number of which particles in the nucleus?

• neutrons
• protons
• electrons
• protons and electrons