Unit 3 Test Review- Chem

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

• nucleus 
• electron cloud
• core 
• center 

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

True or False? Neutrons have a negative charge

• True
• False

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

• 2
• 1
• 3
• 6

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

• 14
• 7
• 15
• 18

Tags

NGSS.MS-PS1-1

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

all matter is made of what 

• energy 
• atoms 
• electrons 
• compounds 

Tags

NGSS.MS-PS1-1

electrons have this type of charge?

• negative
• positive
• neutral

Tags

NGSS.MS-PS2-3

Most of the mass in an atom is concentrated in the...

• electrons
• nucleus
• protons
• empty space

What does the nucleus consist of?

• Protons + Electrons
• Neutrons + Electrons
• Atoms
• Protons + Neutrons