Chemistry: Atoms

The particles in an atom that are neutral and have no charge are...

• negatrons 
• electrons 
• neutrons 
• protons 

Tags

NGSS.MS-PS1-1

An atom with atomic number 6 would have how many protons? 

• 6
• 12
• 3
• cannot be determined 

Tags

NGSS.MS-PS1-1

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

• nucleus 
• electron cloud
• core 
• center 

The positive particles of an atom are...

• electrons 
• positrons 
• neutrons 
• protons 

Tags

NGSS.MS-PS1-1

The smallest unit of matter is...

• energy 
• an atom 
• electrons 
• compounds 

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Electrons have what type of charge?

• negative
• positive
• neutral

Tags

NGSS.MS-PS2-3

Which element has the atomic number 10?

• Neon
• Flourine
• Potassium
• Hydrogen

How many protons are in the element sodium?

• 23
• 11
• 13
• 14

How many electrons are in the element oxygen?

• 7
• 10
• 8
• 9

Tags

NGSS.MS-PS1-1

"C" is the element symbol for which element?

• calcium
• carbon
• chlorine
• cadmium