Why do atoms bond?

What is a valence electron?

• The sum of neutrons and protons.
• The # of electrons in the outer shell/ring that determines bonding.

• A type of bond.
• A popular compound.

Atoms are most stable "happy" when their outer shell is complete.

• true

• false

Why do elements bond?

• To be friends

• To create a new element

• To become stable, have a happy number of 0 or 8.

What molecule could this be? 

• BF₃
• CH₄
• H₂O
• CO₂

Tags

NGSS.MS-PS1-1

What molecule could this be? 

• H₂O
• CCl₄
• PCl₅
• NaCl

Tags

NGSS.MS-PS1-1

Who could this molecule be?

• CH₄
• CO₂
• PCl₅
• BF₃

Tags

NGSS.MS-PS1-1

Phosphorous tri-chloride (hint: tricycle has 3 wheels):

• PCl₃

• P₃Cl

• P₃Cl₃

• PCL

Tags

NGSS.MS-PS1-1

What is the number of valence electrons for Oxygen, it is in group 6 but period 2?

• 8

• 6

• 2

• 1

Why do atoms bond?

• They typically don't bond

• To add or take away energy levels

• To have a full valence shell.

• To have a full inner shell

Which of the following has a full valence shell?

• Oxygen (group 6)

• Neon (group 8)

• Barium (group 2)

• Carbon (group 4)