Unit 2 Test Review

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

• nucleus 
• electron cloud
• core 
• center 

An atom with atomic number 6 would have how many protons 

• 6
• 12
• 3
• cannot be determined 

True or False? Neutrons have a negative charge

• True
• False

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

• 14
• 7
• 15
• 18

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

all matter is made of what 

• energy 
• atoms 
• electrons 
• compounds 

electrons have this type of charge?

• negative
• positive
• neutral

What does the nucleus consist of?

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

The atomic number tells you what?

• number of electrons
• number of protons
• number of neutrons
• both electrons and protons in an atom.

________ are the COLUMNS on the periodic table and are organized by similar properties.

• Classifications
• Groups
• Periods
• Elements