Chem Atoms CCA

How many atoms are in the following picture?

• 6
• 2
• 3
• 4

If one molecule of carbon has bonded with four hydrogens, which formula represents that model?

• CH₄
• CO₂
• CH₃
• C₄H

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

• 14
• 7
• 15
• 18

The first energy level can hold up to how many electrons?

• 8
• 4
• 2
• 5

What is the atomic mass of "F"?

• 9
• 18
• 17
• 19

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 

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

• 6
• 12
• 3
• cannot be determined 

Electrons have which type of charge?

• negative
• positive
• neutral

Silicon has how many neutrons?

• 14
• 15
• 28.09
• 1